<human>: So I kind of feel like an asshole even feeling like this but I've been thinking about it so I felt the need to post. Perhaps a healthy dose of reddit, including the biting bluntness that r/relationships is known for, to snap me back into place. 

I've been dating my girlfriend for close to 2 years this January, she has a close friend named Jessica that she has known since high school. Jessica goes to school a few states away so they only see each other in person on holidays when they're with respective families but stay in contact regularly, they even have one night a week set aside where they game online together. I just want to make it clear that I think it's awesome that they stay in contact and I have old friends, I get it. 

I've never met Jessica but she is passing through town next Tuesday to see Liz(my gf) and she is also staying the night. The prob I have with this is that Liz is also bi and has recently told my gf that she is most likely gay. 

So that's pretty much the issue, I trust my gf but I also feel like that crosses relationship boundaries with me; it's no different to me than if I was her boyfriend and she wanted to sleep in the same bed as male friend. 

Or idk, girls sleep with other female friends and I certainly have before although now that I'm dating Liz I would tell them to take the couch or whatever. 

Am I in the wrong for wanting to ask her to tell Jess to take the couch? I even have a blow up mattress that she could borrow. Or am I being a controlling ass?

Can you give me the gist of the text in a nutshell?
<bot>: Girlfriend's gay friend is coming to stay the night at her place next week; I feel weird about them sharing a bed