Whats up with this guy why wont he talk???

Okay so theres this guy at my lunch on a days cause were on block sch. Any ways on a days he sits at my table for about 10mins. He doesnt say any thing to meh but he does stare at me a lot and stuff then his friend come over after they get there lunch and sits w/ us theres usually 3 girls and 2 guys the three girls always talks to me and he usually just smiles and laughs and on b days he just sits and the table alone w/o his friends cause they dont take that lunch…

So today I was sittin at the table with him and mii two other friends writeing my book when his friends came over and started talking to me asking me bout my book and stuff and complimenting it and he was just smileing at me…

After lunch was over today I walked slow so he could catch up with me lol just to c if he would talk to me w/o his friends cause I think he is kinda shy..anywho we were basicly walking to class together and he looked over at me a couple of times then we went our seperate ways it was so cute…

So my q? Is does he like me and is just shy to talk to me or is it just my imagination or sum???and what do you think wats your opinion please help Cause tomarrow is a b day when he sits by hisself and im wondering if I shud just talk to him you know ask his name or whatever…should I??? Please any this dieing q?s I have thankx a lot people