<human>: Can you condense the text into three sentences or less?

Okay guys, I'm in love with a wonderful, beautiful woman. Let's call her L. L and I hang out with a few of her friends, with my friends, it's all great. But, L invited me a few weeks ago to be her date at her Halloween party. Her entire friend group will be at this party, including some people I haven't met. She told me this week that, full disclosure, she fucked one of her friends a few times this summer. This friend, let's call her M, will be the Halloween party.

L and I had a talk about this, about how I don't like being friends with any type of ex. We decided that she would always hang out with M in groups, or tell me ahead of time if it was a one-on-one thing, and that I would never be forced to meet M. I felt good about this.

Now, knowing that L wanted me to go to the party as her date, I assumed she had made arrangements for the party. I asked her last night - what's the deal? She said M was invited before and so I would have to decide if I wanted to come. I told her I have no choice, I can't meet someone she's fucked, because shaking a lesbian's hand is like shaking her dick, and I can't say "Hi, nice to meet you" and shake something that's been inside of my girlfriend.

So, here we are, L is totally unsure of what to do and I honestly wish she could just not be friends with M. I'd never ask her to do that, that's terrible, but it god would it be easier.
<bot>: I don't want to meet my girlfriend's ex FWB, but I can't be fully in her life without doing so.