Most Helpful Guy
Check out the following link from Wikipedia, it might help you.
Rubbing your back could mean true affection. Forehead kiss means he truly loves you, doesn't only want to be physical but wants to connect with you mentally as well.
Contentment or happiness.
It is a way to be affectionate and show his affection for you. I usually do this for a girl I really care about
That he's cuddling.
That he truly cares about you. Not just as a sexual partner but something else more
You know exactly what it means, stop bragging.
he is happy with you
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