If you like him go for it, but have your guard up and be wary of him.
Don't let him pressure you for sex or be controlling.
Give a timescale of perhaps atleast a month before sleep with him-depending how well you get on.
If he's still around after timescale then you know he likes you, and hopefully you can build a relationship.
If you feel that he's just after one thing then dont bother.
Just think though some people can get a bit of a reputation, but sometimes a special someone comes along that they really care about and they give that all up, that might be you, or you could just beanother conquest, only you can decide thow.