Well, I have a teenage son who went through a Bam Margera phase, so I know that's a "heartagram" in the thought cloud/bubble - which is a symbol used by the Finnish band "HIM" (and not a satanic thing, like it sort of looks like.)

(not surprisingly, the band's URL is "heartagram.com")

So I'm guessing it's something to do with "thinking of him" or "dreaming of him"? But that's all I have so far.