is it normal for guys to act like this?

[Gia Tatro]

this guy reallyyyyyy liked me when we first met and things were going great the first couple weeks. he gave me butterflies, he was sweet, i had a bad feeling though cause i knew he did alot of drugs. i told him i was afraid to fall for him cause i didn't think he would catch me if i did. he got mad saying i was "judging him" for someone that he wasn't, cause he had no intention of hurting me or using me. almost a year later, we still talk, and still hang out occasionally, but when we hang out, we don't talk much and he just stays on the computer talking to other ppl on fb chat or blasting music. i told him to stop, and he does less now, but still does it. am i selfish for wanting his complete attention when i'm with him?