He doesn't always run around half naked, but there have been several occasions - especially when he stayed the night (with other male friends, so there's no use reading into that) or had a shower and just didn't put a shirt on afterwards. He has never done this when the other female friend of our group was there.
He's definitely attractive and well built, so it makes me all kinds of flustered, but I try not to let it show... Does he know what he's doing?
Feel free to add opinions or ask for more details if it might help. I have had a serious crush on this guy for years and I am losing my mind over this... HELP xD