SUBREDDIT: r/relationships
TITLE: My friend and I need help on how to nicely approach our new girl roommate about problems we already have with her.
POST: My friend and I (males) just started living with a girl we floored with in the freshmen dorms last year; we are all 19 and attending the same college. It's a two bedroom apartment, my friend and I share one room and she didn't want a roommate so she lives in the other room alone. Therefore the rent is split 25%, 25%, 50%. We needed another roommate so we could afford the rent and unfortunately she was our only option at the time. 

So, the major problem is her boyfriend. The dude is ok but he is here ALL THE TIME. He's been here everyday and it annoys my friend and I. It makes us uncomfortable because it changes the dynamic and we feel like we have a guest present 24/7 and have to be nice to him, make him feel like good company, and share meals; instead of doing whatever we want and going about our business. You would think she could handle entertaining him but a good amount of times she leaves and he just stays over, and occasionally comes over before she's back from work. Food is scarce because we're college kids but he has been helping himself to our stuff. Additionally they are messy as fuck and it really pisses me off that I've been cleaning up after someone that doesn't even pay rent. He just spilled an entire beer on our carpet and proceeded to use all my paper towels to "clean" it up. 

She may be paying the rent of two people, but we didn't sign the lease to live with this guy. We haven't been able to talk to her about this as roommates because he is always here when she is. We want to do this in a civilized manner so we don't have animosity to deal with for 10 more months.
TL;DR: 
We need help nicely telling our roommate her boyfriend is here way too much and inconveniencing us in our own home.