Anyone been with sombody who’s on drugs? And they disappaer for no reason?

My boyfriend has an addiction to crystal meth. He was being distant last week. This week i haven’t herd $hit from him cause is phone off he didn’t pay the bill. But I don’t give a $hit he can call me somehow. It’s been off for four days now. We didn’t get in a fight or nothing. And i asked him straight up do you wanna brake up? Ru mad at me whats the deal? He said no i don’t nothing’s wrong. Weird weirdness. I went to his house today he wasn’t home only his brother i grabbed my belongings. We been together nine months this about the third time he has done this act distant out of nowhere. I don’t know maybe hes high,selling, drugs with somebody I don’t know. Have you gone through this . I think its an emotional roller coaster and devastating I hate it. Also what do addicts do so important that they cant contact you?Tell your story and how did u deal?