Why doesn't my boyfriend kiss me enough, can there be something wrong?

I feel as if my boyfriend does not like kissing or something we have been together for two years, he has always been like this, at the beginning we kissed a little more, not a big difference from now, we kiss when he comes and picks me up nothing special really, I just don’t understand not even during sex, can there be something wrong? , It does not seem to bother him, but it bothers me a little.