Is it normal we rarely kiss anymore?

I'm not sure, I'm like that with my boyfriend to, but I don't mind. We weren't bestfriends before we started going out, but we act like it now. I can't say we kiss as much as we used to, but as long as he doesn't pull away when I try to kiss him i'm fine. I think it's more comfortable the way we are, I wouldn't call it drifting. I think alot of people see it as drifting, or falling out of love so they break up, but honestly it's just a relationships natural course. I don't think it's anything to be afraid of