<human>: Can you give me a shortened version of the text?

EDIT: There were two guys, only one seems actively interested.  I removed the stuff about the not interested guy and added some details about the one who seems interested.

The first guy: met last year, second semester in a class.  I was just out of high school and still very shy; I've since improved.  He made a few comments that made him seem slightly interested.  One obvious example was him wondering if I was going to the bar to celebrate the end of the school year, then saying that I should go.  Now when I do see him around he always says hello, smiles, or stops and chats for a minute.  Very brief, how's it going kind of stuff.  I found it odd that he initiates these since we didn't talk much in class.  I've also noticed that he tends to do double takes around me when he sees me walk by (and my assets are not worth a double take - rectangular body shape aww yes). He's definitely single. I have him on Facebook, but we've never spoken on it.
<bot>: There is a guy who I was in a class with last year.  Now he says hello anytime he sees me - whether he's alone or with friends.  How do I ask him out/ gauge his interest?