how long is your boyfriend going to be in rehab? if it's going to be for a really long time, like upwards to a year or so, that's unreasonable if he expects you to stay with him. you're not married, you aren't tied to him, you shouldn't be limiting yourself. you're only 21! you should be getting out and living a little! don't let yourself be stuck in this kind of relationship where you are being hurt by a guy who isn't anywhere near you anymore.

idk. i agree with hamster for the most part. this relationship is no good if the guy can't stay clean.

but you don't have to get romantically involved with this other guy friend, and no, it's not cheating to just hang out with a friend who happens to be a guy. in fact, i'd probably advise against it since this sort of thing has happened to me and it was a bad idea to date a guy i didn't like in a romantic way. he went a bit crazy, haha.

anyway...this is just my opinion so take it as you will, but i don't think you should be keeping yourself closed to any kind of romance just because you were with this drug addict guy before he went into rehab. i would break ties, if it were me. you guys aren't together anymore, and can't physically be together, so this isn't a relationship.

get out and have some fun. don't worry about the other guy. just think like you're single again (don't have to be "single and looking" right?) and have fun! you deserve it.