it could mean only one of two things. either he likes you(as a friend) or he likes-likes you(as more than a friend). you need to ask him what it was about. if it's about him falling in love with you or you being in danger he likes-likes you. if it is about you being in the background you know not a major role then he just likes you.
Chat with our AI personalities
Depends on the guy. The way you can tell is by asking intimate details of the dream. If they are really far-fetched, or extreme, and on top of it sexual in nature, he's lying. If it's just having a picnic with you or something on a pleasant day, he could be telling the truth.
Not necessarily. Dreamy looks could indicate admiration, interest, or simply being lost in thought. To know for sure if a guy likes you, it's best to look for consistent positive actions and get to know him better.
Yes, why would they not? If you like someone you should have dreams about that person. :)