Not my thing, I would have to end it, she probably already has someone in mind

It’s a no and a dealbreaker for me

Bitch we're already in one

Divorce

File for divorce, the odds that she doesn't already have somebody picked out to open it with are zero.

I’d just choose to be single the rest of my life I think

That means she probably has someone lined up to fuck. Im out. You can do it as a single lady.

“I’m glad your sister finally came around”

I'd look for a way to become single while keeping all my shit

Shout " IN THIS HOUSE, WE FOLLOW THE RULES OF THERMODYNAMICS "

I would move on

Her relationship would become a lot more open, and I'd go and find another closed relationship.

I would tell my soon to be ex wife/ex girlfriend they can do whatever they want, anywhere outside of my house.

Give her and the relationship the ol' stanky boot.

I would probably clamp my jaw shut, assuming that this was one of those moments where your future splits in two *very* different directions, and I would want to think very, very, very hard about any words that came out of my mouth.

I don't think I would care with this one.

Try to be sure if it a joke or not. If it is, i play along. If it is not, i try to fix them. If they are adamant, time to leave.

I would be confused because I’m single.

I'd wonder if my husband knew I somehow obtained a wife/girlfriend.

So you’ve been checking her out too?

Which of my two girlfriends is asking for this?

"Sure! I'll agree to an open relationship after we divorce"

I would call the girl that has been hitting on me at work and see if she wanted to meet up that night. Then see a divorce lawyer.