I keep having dreams about my ex!

This blows. I kid you not, in the last 2 weeks I have had about 4 dreams about my ex-funny thing is, not my recent ex, my highschool bf from 10 years ago!

What gives. I dont even think about him like that.
I'm not reading further into it, I just wanted to share with you guys.

What do you guys do if you dream about an ex?