Is it strange that I continue to have recurring sexual dreams?

I am often sleeping with all sorts of different people in my dreams and they are very sexual in nature. I am in a committed relationship and I am happy with this person.

In the past I was unfaithful and I still feel horrendous guilt and shame over this that often bothers me and affects me.

So is it weird that I have so many sexual dreams? Does anyone else have this problem?