Maybe the wrong topic but it should be fine:
I live in a three-bedroom flat with two other guys from my former halls of residence.
Asides from each room which are big and with their own toilet, there is a pretty small kitchen/living room.
One of my mates has recently gotten himself a girlfriend and she is here ALL OF THE TIME. Seriously, she's here when he is and when he isn't. She's had friends over when he wasn't even here. I'm not happy about it and neither is my other housemate. Partially because I don't care much for her personally from what I've seen so far and also because I don't think it is on when I'm paying £411 a month and can't do what I want because she's always around and making stupid comments about everything. I can't relax in my own home like I used to.
My other housemate and myself have been fairly quiet so far. I try to be nice and polite but if she wants to start trying to take the piss, I don't bite my tongue. I've said to my housemate that we all need to talk when she isn't around and he said "Yeah, whatever". I then said "No, not whatever. We need to" and he said "It's not like it affects you". I said I wasn't going to talk now because (guess what?!) she was in the other room and still is.
I think it's unreasonable for him to have her over constantly. I also think it's totally bad for whatever relationship they have but if it wasn't occurring in my home I'd leave him to it and let him make his own mistakes.
What's prompted me to do something is that they've planned a holiday for June meaning they're expecting this situation to go until June (at least!) and I can't have that.
I want to give him a smack around the head and tell him to let this relationship chill out and try going on some dates...away from the house but it doesn't appear that he is going to listen to blunt words. He had a breakdown (of sorts) when she "joked" about leaving him and I'm sure they've only been going out for a month tops (she swears it's 7 weeks - but she says a lot of things).
Long story short, I'm getting pissed off. I don't care about the nitty gritty or personal things really, I just think it is unreasonable and inconsiderate of him to have her over all the time and think nothing of the other two people who are living here.
I had a similar predicament in uni. One of my friends got a girlfriend who moved straight into our house. She constantly had people over, never paid for anything, and it made me quite annoyed that someone I barely knew moved into my house and used my stuff without contributing towards anything. It annoyed EVERYONE in the house.
Unfortunately, it ended badly. Nobody wanted to question her or her boyfriend about the whole thing, so as to not upset him. So it was talked about a lot behind their backs. Unluckily for me, I was the only one who was caught out saying things. After the girlfriend found that out, she managed to manipulate the other housemates against me as she thought I was the only one who had a problem with her. Combined with them not wanting to admit they slagged her off too, they pretty much cast me aside. They no longer speak to me.
The only advice I can give is that both you and your other housemate have to put up a united front, otherwise things will turn ugly.