What should I do?!!!! Help!!!?

So.....school just started last week and there's this boy in my homeroom. He's really cute and nice and we kissed thursday and I didn't see or talk to him for 3days. Then we get back to school and he doesn't even talk to me at lunch or In the hallways when we p eachother.when we in cl he be all overme and he walks me to cl and kisses mebut sometimes I think he avoids me. hE also takes my phone everyday at the same time so that I can meet him at his locker after school. So.... What should I do he also put his number in my phone so I'm asking how should I start a text with him? Is he ashamed of me? Or am I just a fene? Answer quick plzzz!!!