You busted your partner while having sex with another

[Megaloria]

How can you live with someone you don't trust?

You should watch "Kenny vs. Spenny".

[Heaven Hieghts]

It depends how much I really cared about that person... If I was totally and completely in love with them, I'd pack my shit, go some where such as a hotel then cry until I die due to lack of water. Either why... I would leave that person and never ever ever ever ever ever ever want to see them again...

[North Defese]

I'd never sleep with him/her again, and would most likely end the relationship right there.

[Barzan]

I cannot rule out killing them both outright should a gun be readily available to me and the person with my woman was a man.

If no gun was ready, I'd just kinda laugh, tell them they might as well finish cause we're finished, start packing HER shit, toss it out a window, call the police and tell them I caught this bitch cheating and I don't want to hurt anyone right now and they should take her somewhere safe, file for divorce, easily get custody of the children and spread various lies about her to her family, friends and to her boss.

If it was a woman, I'd stop watch. Offer to join in, if denied kick both their asses out. Later let my woman back in and demand to hear her 'side' of the story.

I hate to ruin your fantasy there, but if you "call the police and tell them [you] caught this bitch cheating and [that you] don't want to hurt anyone right now and they should take her somewhere safe" then you sure as hell ain't gonna "file for divorce [and] easily get custody of the children". Most likely, the exact opposite would happen.

[Ranzar]

Depends on the nature of the relationship I suppose. If it was a casual thing, then it probably wouldn't be very hard to deal with, though I think it would be pretty impolite on her part. If it was a serious relationship, then I honestly can't imagine what it would be like, since I can't imagine myself to be in a serious relationship.

[Wilgrove]

I'd call the cop because obviously the man is breaking & entering, and raping my wife. Then once she tries to talk me out of it (unless she's immoral enough to let an innocent man go to jail), I'll tell her that I'm filing for divorce in the morning.

[Glorious Freedonia]

I would be tickled pink that I would have someone to help me satisfying her sexual needs so that I could have more time to waste lazing about.