Roommate's boyfriend sleeping over every night for 2+ months straight? Moocher situation.

From my response below, I believe the most important 'resource' an apartment offers is that it's a place to eat, sleep, and shower - and that's what I pay rent for.

A 4th person is sleeping and showering in the apartment, but only 3 people are paying rent. It isn't what I agreed to when I initially signed the lease. I don't think he necessarily needs to pay 25% of the rent - I think 5-10% is more reasonable, since they are in my roommate's room together. But it's inappropriate for someone not paying one cent of rent for an apartment to be sleeping in it daily. You can't just sign a lease with someone and then the next day move someone else into your room. At least that's what I think.

/r/badroommates Thread Parent