Boyfriend doesn't kiss me first? should I worry?

We've been dating for 3 months now. I'm his first girlfriend. He hugs me whenever he sees me, holds my hand in public and in private, has a picture of me in his wallet, I guess likes to hang out with me since we usually hang out on Fridays at his house cuddling, him putting his arm around me. I always have to kiss him first. He never kisses me first. . .does he think i'm unattractive?