I had a dream last night that I was kissing my cousin. What does it mean? ?

Ever heard of the term, "kissing cousins?"  It's not that unusual, but since he is related to you, it's not such a good idea.  As even now you feel a bit squeamish about it.  I would just look back on this as a learning lesson in your Life, and also view it with a  little bit of humor.  We all do some crazy things as we grow through our younger years.

The dream might be telling you not to project your own desires onto other people or opportunities but to wait until the right time and situation to commit yourself to a duty or responsibility or church or friendship. 

It's good that you feel weird about it.

Because of that: probably nothing to worry about.

I’m married to my cousin 

Simply put you like your cousin. A warning perhaps.

It means you're ready to become an honorary citizen of Alabama.

Roll Tide!