urmmmmmmmmm, for me,if he;s interested in u,he will
1 always sms u
2 will call u at times
3 will try to chat wif u whenever he sees u online
4 will buy u gifts during special days like christmas or valentine
5 try to ask u out(he might ask u out in a gang at first)
6 care bout u(eg. when u r sick,he will be very worried)