Dreams

How do you unravel a dream?
I used to dream about a person, I suppose you could call him an ex lover, I used to dream about him when something was up.  Something, like a problem he had, or I dream about him and Id have an email in the morning from him telling me how much he missed me blah blah.
But we have not been in touch for over two years. 
I have not even thought about him or that time in my life for years!

Why did I dream about him last night? Its bothering me because in the dream he just turned up to our house.  My husband let him in like a friend even though he knows a sketchy outline of what happened. 
While he was in our house there was feelings, like, old feelings.  It was just strange and I dont like not knowing.  Even if I wanted to check up on him I couldnt.  He took down his and his wifes blog ages ago.

Anyway its in my brain now so I will have to think on it.