What can I say to this guy I like? via MSN? I saw him recently when I saw his band play?

[Butterfly]

Ok theres this guy I like and have liked him since pre-school but hadnt seen him in ages until I saw him recently through Facebook and then in person cuz he plays in a rock band, i saw him again after so long and I fell hatrd for him again, after the show he came to my table and we talked for a couple minutes. now have him added in the MSN Messenger but dont know what to day to him to get hs attention, he seemed really cool and nice when I talked to him when he came over to greet me when his band play but now I talk to him via MSN and he doesnt respond...why is he not responding? what can I do to make him interested?..

[hannahBannana]

how about " i like you "