- G_U,
Well, this depends how seriously you believe she is cheating. If your feelings are above the %50 mark, there are two approaches.
Number one. Try to hang out with them both more often. If they don't feel comfortable with that, then something might be up, but it's still not %100.
Second thing you do. (You really have to deeply consider this because it has a major effect on your conscience and is in a morally gray area.) You wait about half an hour after she leaves, then you head to his place, park a little down the road, then sneak up to the house and either come down and drop in on them with some excuse. (or if you want to go an even darker) Spy on them, let them go as far as they might, then if something suspicious happens (like they head to the bedroom but you can't see in, wait 10-15 minutes, call her cell, and try to act natural and ask her what she is up to and if she will being something home on they way back. If anything is going on, she either won't answer, or her tone will be off.
(Like I said though. Consider it deeply. This path has a heavy chance of leading to heartache even if she ISN'T cheating, even if she doesn't catch you spying on her, you may not be able to look her in they eyes again for not trusting her if you are proven wrong. You can also pay private eyes.)
Then again there is also the third option of talking to her about your feelings idea. Most people don't seem to want to try this one, but it really is the one I recommended most. Just tell her after the fact that she described his organ and such, you feel a little uncomfortable about it. You don't even have to accuse, her, just confess that it makes you feel uneasy and if you talk about it in the proper manner, you may be able to better read her.
There is another option, but it is also, one not for the feint of heart. You ask her if she has ever considered a threesome with him and you. You don't actually have to do, it. Just ask her if she's thought about it. She will either be put off by the idea, which may actually be a signal of the best case scenario. She may think it's a good idea, which may be a sign of a poor scenario. Unfortunately, this is an idea that requires some amazing people reading, and decent knowledge on how to extract the things you want to know without making it obvious, so I don't personally recommend it to you. It is still an option though.
The first and third option would be my first bets. I'd also recommend the spying one above the fantasy question one.(If possible for that one, use a private eye. It will be slightly easier on your ego. Slightly.) The last option I'd ever try if I were you, would be the final idea I gave you. Doesn't seem suited to your personality.
Someone else had a good idea too. One which requires 2 very important things though. The ability to completely ignore your suspicions and the other to be able to feel like you could just forgive her easily if she was cheating. Just be a better boyfriend. Be such a good one that she is swept off her feet like it's the first time all over again, not just sex, or dinner or things like that, but do things for her like chores. Honestly, women find a man who is helpful around the house very sexy. Studying up on different sex positions and better technique will make her feel like she wouldn't need another man to satisfy her. Places like the men's health website are great for that kind of advice. Read it all several times, imagine it in your head to get a good idea, and concentrate on only making her feel good during sex. I find if you are completely selfless during sex, you will have an amazing time because she will reciprocate.
This is all I've got for now, but I hope some of this was helpful, even if it was to get you to think about what your feelings are on these topics and if you trust her enough to take the kinder ways of dealing, or if you are so panicked that you jumped at the one that requires some binoculars or the awkward proposal of a threesome.
Number one. Try to hang out with them both more often. If they don't feel comfortable with that, then something might be up, but it's still not %100.
Second thing you do. (You really have to deeply consider this because it has a major effect on your conscience and is in a morally gray area.) You wait about half an hour after she leaves, then you head to his place, park a little down the road, then sneak up to the house and either come down and drop in on them with some excuse. (or if you want to go an even darker) Spy on them, let them go as far as they might, then if something suspicious happens (like they head to the bedroom but you can't see in, wait 10-15 minutes, call her cell, and try to act natural and ask her what she is up to and if she will being something home on they way back. If anything is going on, she either won't answer, or her tone will be off.
(Like I said though. Consider it deeply. This path has a heavy chance of leading to heartache even if she ISN'T cheating, even if she doesn't catch you spying on her, you may not be able to look her in they eyes again for not trusting her if you are proven wrong. You can also pay private eyes.)
Then again there is also the third option of talking to her about your feelings idea. Most people don't seem to want to try this one, but it really is the one I recommended most. Just tell her after the fact that she described his organ and such, you feel a little uncomfortable about it. You don't even have to accuse, her, just confess that it makes you feel uneasy and if you talk about it in the proper manner, you may be able to better read her.
There is another option, but it is also, one not for the feint of heart. You ask her if she has ever considered a threesome with him and you. You don't actually have to do, it. Just ask her if she's thought about it. She will either be put off by the idea, which may actually be a signal of the best case scenario. She may think it's a good idea, which may be a sign of a poor scenario. Unfortunately, this is an idea that requires some amazing people reading, and decent knowledge on how to extract the things you want to know without making it obvious, so I don't personally recommend it to you. It is still an option though.
The first and third option would be my first bets. I'd also recommend the spying one above the fantasy question one.(If possible for that one, use a private eye. It will be slightly easier on your ego. Slightly.) The last option I'd ever try if I were you, would be the final idea I gave you. Doesn't seem suited to your personality.
Someone else had a good idea too. One which requires 2 very important things though. The ability to completely ignore your suspicions and the other to be able to feel like you could just forgive her easily if she was cheating. Just be a better boyfriend. Be such a good one that she is swept off her feet like it's the first time all over again, not just sex, or dinner or things like that, but do things for her like chores. Honestly, women find a man who is helpful around the house very sexy. Studying up on different sex positions and better technique will make her feel like she wouldn't need another man to satisfy her. Places like the men's health website are great for that kind of advice. Read it all several times, imagine it in your head to get a good idea, and concentrate on only making her feel good during sex. I find if you are completely selfless during sex, you will have an amazing time because she will reciprocate.
This is all I've got for now, but I hope some of this was helpful, even if it was to get you to think about what your feelings are on these topics and if you trust her enough to take the kinder ways of dealing, or if you are so panicked that you jumped at the one that requires some binoculars or the awkward proposal of a threesome.