<human>: Ola! Details below:

I met this guy over a year ago and I like him a lot. We share similiar interests in music, literature and games, and he's one of the best friends of my current girlfriend. We cook a lot together, watch films, are just generally good 'bros'.

At the moment, I'm living abroad (for another two months), and he sent me an e-mail, saying he made out with my ex-girlfriend and he felt really bad about it, many times he emphasized that. He hoped I wouldn't be pissed off at him. I told him I wasn't, and it happens, I don't blame him, she's hot right? I was glad he told me right away and didn't tell me I'd get over it (nother friend did that once), or something condescending like that.

My ex and I broke up 9 months ago after a one year relationship, but I don't think that's too relevant. He said he was considering going on dates with her, and asked how I'd feel about that.

I feel like I **shouldn't** mind if he starts dating her. But I felt very uneasy at the idea, and I don't think I would enjoy hanging out with him much if he did, especially if I know there's a good chance my ex will be there too (all three of us have partly the same circle of friends). I am just about fine with hanging out somewhere were she is too, but this would be a big gamechanger.

So what do I tell him?

Provide a brief overview of the text.
<bot>: I feel like I shouldn't care whether he dates her, but I do. I think it would very negatively influence our friendship. How do I deal with this?