Feel uncomfortable living with gay people?

I am straight and I'm a uni student, and it turns out I'll be living with 3 gay people and one straight guy due to some arrangements (people moving in/out, some taking a placement so needing students to fill accomodation). These three people are very openly gay, i.e. clear gay mannerisms. I'm a little ashamed of myself but I feel incredibly awkward around them. I know I shouldn't, but the way they act, I can't help it. My parents and background given my religious upbringing perhaps has added to that. I'm fine with being friends with them or talking to them, but actually living with them has really thrown me. I'm not worried they'll hit on me or anything, I'm sure they won't it's just I can't get past the whole gay mannerisms (which they are very stereotypical, i.e. very camp). Feel like I want to back out of the contract and go and live with other people, but feel really bad about it. I'd like to have thought I wasn't prejudiced, but actually facing the prospect of living with them, I'm really awkward about it. And rejecting them because they're gay, I just kind of feel a little sick with myself. Thoughts/advice? Anyone been in a similar position?

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