Boyfriends family are drug dealers what do I do.

So I found out today that my boyfriends sisters and brother got arrested a few days ago for drug dealing. And it was not just Marijuana it's was hard core drugs. Well I'm not the type to be involved in drugs. I'm a straight A college student and now I'm afraid my boyfriend is going to start dealing because he lost his job and everywhere he's applied to hasn't called back. What do I do! I love the hell out of my boyfriend and don't want to leave him but I really don't know what to do!