<human>: Can you give me the gist of the text in a nutshell?

One of my best friends in college(girl) and I (girl) are roommates this year. She met a guy over the summer and they started dating. They had some issues for the first half of the school year (he's emotionally needy/requires constant contact and wasn't okay with half hour long periods where he wasn't texted etc.) but he moved up to be near our school, go back to school, and be with her for the second half of the school year. She is much happier with the relationship, but doesn't seem to be noticing a huge number of problems that her boyfriend's constant presence is creating. They are still constantly texting when apart and he comes to our apartment immediately after classes and stays here until one of them wants to go to bed. 

I'm not bothered by his constant presence. There is space for everybody and he's polite (very quiet, so not much conversation). However, she is spending all of her time watching movies/tv with him. She never gets her homework done in a timely manner, never does house work, never does her miscellaneous responsibilities. I've talked to her about it, but she claims she is "busy", very very "busy" when a large chunk of her day (4 to 6 hours) is spent sitting on a couch (generally not talking) with her boyfriend. 

Her grades are dropping (not horribly, but noticeably), people are wondering where she is (he doesn't like hanging out with other people/being in public very much), and I'm having to do extra work for projects/housework.
<bot>: Good friend's life is falling apart because she spends to much time with boyfriend. Is it wrong to say something to her about it? How would I even bring this up?