Is this lust?!!! Helppp!!!!!! guys help only!?

im a girl asking the question and my bestfriend is a guy. ok so me and my best guy friend have been going to school for the past week and if i dont go he gets mad. and we laugh for the stupid resons and if i act immature sometimes he gets mad. when we went to the store he told me if i wanted anything i told him no and then h said he was like im never going to ask you if you want anything ever again. and wen we came back from the store he shook my hand hard and took long to let it go. we text and chat like almost everyday sometimes from like 8 in the night to like 3 in the morningg and if i dont reply bck he would blow up my chat to wake up. and today he treated me to buy a hotdog and some lemonade. :]] and when we were in durning school we would walk home everysingle day. and when he would check out girls i wouldnt get mad but when he would talk about them i kinda get mad or when girls write to him on facebook that they miss him :o. and when i talked about my ex(his Homie) he told me stop talking about him your like a dk crying for its pusssssssiiieeeeeeeeeeeee, and when he had to take a class he told me to get that class to just for the fk of it so i got the class, and he told me if i can chill with him durning lunch when the new year of school starts cause he doesnt have anybody to kick it with. so yea what does this sound to you?