Does anyone have experience cheating on their girl friends that they live with?

I enjoy having a main girl who is nice to spend time with. I would say she is the least crazy girl I've been with, but that means she is fairly boring. She doesn't enjoy going out or doing drugs which isn't fun with my coke habit. She's cool with threesome's with other girls but that's more work on my end and harder to set up because she doesn't like going out. Also I prefer one on one.

I've had a fair amount of side chicks while I've been with my girl friend but only one so far knew I had a girl friend which went fine until she insulted my girl friend. Of course all my side chicks have been crazy which is fun but they don't last that long.

So has anyone been able to maintain plates that you told straight up that they are a side hoe? Since it was much easier to fuck around with a girl when she knew I had a girl friend. I'm just a little nervous that they'll either try to tell my girl friend or that I'll significantly narrow my options. Getting caught isn't too much of a concern but I do care about her and I've been caught before so I don't want to hurt her again.

Also I know you guys are against moving in with girls so I don't really need advice on that. So far she's been my favorite roommate and she doesn't get on me about disappearing in the middle of the night. It is just harder now cheating on her since I can't bring the girls back to my place.