My friend and I recently discovered we have been dreaming of each other at the same time. The first time this happened was about 2 months ago. I began having dreams involving him every night for about a week. Last week, we saw each other for the first time in a few months and talked about it. That is when we found out we were dreaming about each other at the same time. We spoke earlier today and I told him I had a dream about him last night and the night before. As it turns out, he had a dream about me last night and the night before. As far as I am aware and remember, they aren't sexual. They are usually us hanging out, cuddling, holding hands, or crying to each other. But, usually just us hanging out- that goes for both of us.

I don't know if this would be relevant, but we dated for a month three years ago and have just been good friends since then.

Do these kind of things occur often? What exactly is it called? What does it mean?