I've been in this relationship for about 4 years.
During my first year I suspected my girlfriend fancied someone else who was on her course. She kept talking about him and too many a time I caught her exchanging texts with him. She's always say though he was ugly and arrogant and she didn't fancy him.
One night, however, she went to a Uni party. A few days later she confessed she had a whole sexual marathon with him that lasted all night. She initially justified by saying that she was drunk and felt randy and was intrigued by his bulge when she sat on his lap during a drinking game. However, she was very brash about it and never apologised.
Initially I was dying of jealousy and I even said I wanted to split up. I was genuinely boiling inside.
After a day or two, though, I noticed I was feeling quite turned on about it, which freaked me out initially. I looked the matter up online and found out it's some kind of biological primeval instinct: the man feels "threatened" so to speak, and wants to offload his semen as soon as possible so as to stake his claim.
I told my g/f I'd forgive her, but what really turned me was on her "cockiness". When I asked her to promise that she wouldn't do it again, she said she'd try her best, but then admitted she was "too obsessed" with that guy and that she had snogged him everyday since the sex night and that his cock was enormous and, in turn, he was also obsessed with her tits (30D- tiny frame massive cups- really fit). She also said she was only interested in him sexually and that she wanted to carry on with our relationship.
I got the biggest hard on ever and fucked her like never before.
While shagging she openly admitted she enjoyed having two blokes at her beck and call and the moment I asked her how big the guy's cock was she had a massive orgasm.
That, unfortunately, opened a can of worms. The three months that followed were hell. Rationally I was quite firm that she should keep her hands off him, but each time she confessed she'd done it again I'd get secretly turned on.
Once in particular was when she got back from college and after some serious 'interrogation' (she really looked like she had sex that day, I cant explain) she said she's sucked him in the University toilets and he'd come all over her top. After we had a row about it, she gave me a blow job and I came literally straightaway, thinking two cocks had been in that mouth on the same day, one massive and one small.
I never admitted it to her that this was turning me on, though surely it must have crossed her mind that I kept forgiving her etc. Many a time she'd ask me "why dont you dump me then?" and giggle, while i was moaning that she was making me dying of jealousy.
The whole thing ended when that sucker found himself a girlfriend.
The biggest humiliation was that my girlfriend saw him in a club, walked up to him and he introduced her to his new 'official' g/f.
My own girlfriend must have felt so confident because she told me the day after she came on to him to snog him at college and he turned her down, saying he wanted to be faithful and they'd have to pack it in with the affair.
She came home crying, saying that she'd felt really jealous of him and also guilty about me and promised me to be faithful and to change and all that.
For a good year after that, during sex, each mention of his cock made her really wet and gave her orgasms which in turn made me more jealous and horny.
Since those days, we never mentioned him again, but last year she confessed she'd looked him up on facebook due to "morbid fascination" and then had a massive go at me when I got jealous.
I've got a weird fetish and I was wondering if anyone else had it. My girlfriend is on a girl's holiday in Turkey and I am getting turned on by the thought of her fucking another guy out there.
