<human>: So my roommate, we'll call her Hayley, has been dating this guy Trevor on and off for about a year. From the beginning, I got bad vibes from him because of his age, but I refrained from saying anything because he seemed to make her happy. (we've lived together about a year, but been friends since elementary school.)

As time has gone on, I haven't felt any better about him. He's into "party" drugs ranging from weed (not worrisome) to class 2 narcotics (very worrisome) and recently was arrested for allegedly driving under the influence. Trevor tells Hayley he was just tired, but he had drugs in his pocket. He crashed his car, which is the second car crash he's had since they started dating. 

He lives in a similarly sized city to us about 2 hours away. So he calls Hayley all the time. We are close friends and roommates, so I am typically around when he calls. If we are out doing something, he complains that she doesn't love him enough if she tries to say she'll call him when we get home. Usually when she does convince him, he calls again in half an hour complaining that she hasn't called back yet. We often haven't finished our meal or shopping trip before he calls. He probably calls 8 times each waking day.

Overall, I feel like he's manipulating her. One week he says he wants to be engaged within 6 months, then the next he says he cannot imagine being married within 5 years. Those sorts of things. I think it's bad news, and I don't know how to make her see how bad he is for her. I love her like a sister, and I'm worried she's setting herself up for a life of misery. He might be going to prison and she doesn't even see why she should break up with him if he goes to prison for half a year.

Can you summarize the given text in a few sentences?
<bot>: Her boyfriend calls her 8+ times a day, is into drugs, and guilts her about not loving him enough all the time.