<human>: Provide a brief overview of the text.

My fiancee and I live together with two friends, moved an hour away to be with her (mutual decision) and we've generally had a pretty solid relationship.  She's been out of work for some time because of a hand injury she got at work, but that's gotten better now for the the most part.

At the moment, I support her and truthfully also do most of the chores at home (cooking, cleaning, fixing things...everything, really) with a little bit of assistance from her.  Generally I don't resent it, except for a recent development.

She plays a lot of games, it's something we bond over.  Lately it's been Guild Wars.  She's a role player and has done all sorts of things, from LARPing to BB-based stuff and generally has a number of characters inside her head at the same time.

Lately she's been developing serious romantic relationships with her characters and other characters online.  While that makes me uncomfortable, I knew it was something that she did and it's certainly nothing I'd try telling her she couldn't do.

Where I get upset though?  I had to go in for a heart procedure earlier this week.  She was at my Aunt's home near the hospital with me in order to come along, but the night before I get home to her on Guild Wars doing an Erotic Role Play session with a guy her character had gotten involved in.

She didn't hide it per say, just mentioned I might not want to read it.  She then proceeded to stay up all night having virtual sex with/talking to this guy.  I could barely sleep myself between anxiety about the procedure and the noise and light from the computer, but when I got out of bed at 6 the next morning she was still at it.

I feel betrayed and hurt, and most of all I feel that if I was in the same situation she'd be beyond angry, so the problem is...I really just don't know what to do.  Some advice would be awesome?
<bot>: Fiancee is having virtual in-character relationships/sex.  I know about it, but it's killing me.  What to do?