It always seems like a great idea at first.
Sure does
Then one partner or another gets a bit jealous when the other is getting just a little more attention, etc.
Which is part of the spark. Jealousy can be good as well as bad. If you're not jealous of your partner, even just a little, what's your attraction based on?
When one partner or another wants to "expand the horizons" of a relationship, it usually translates as "I need a new piece of ass because you're not doing it for me anymore."
Or, "I need a new piece of ass - so do you, you still do it for me but we're gunna be a long time in the box - let's try it."
Generally, nothing good ever comes of it...unless, of course, you're the third party in the menage.
Then it's pure physical pleasure because you don't have any investment in the relationship.
You're right (for once) if the third party is a stranger. If they're more than a stranger, they can also lose if it goes "wrong".
I know it works for a few couples,
More than a few - lol
but for most of us, it's the beginning of the end of the relationship.
In your dreams. Swingers have been recorded as having the lowest incidence of divorce except in countries where divorce is still illegal.
If you can "cheat" in a group setting and it's all right, it's not long before you're cheating one-on-one.
Who's cheating? Cheating is to individually &/or independently screw around behind your partner's back. Cheating could also be used as a term to describe those who want to screw around behind their partner's back but, for whatever reason, keep it suppressed.