There were 3 boys

It means that you might have a certain interest in that person, it could be a desire or you simply enjoy the guy's company.

Throughout my life I have had dreams about all sorts of guys. Some I have been interested in and some I have definitely never thought about in that way. Don't worry too much, though it can feel a little awkward the next day.

It means said guy is on your mind before you go to sleep.