Guys what makes you emotionally attached?

My boyfriend is nice to me and we are enjoying incredible sex, but he rarely hugs me or just randomly kiss me or cuddle. He just distant. WE go out and text each other every day, but I need more physical attention. I do not want to be annoying and just ask him for that, cos he will do that for a week or two. I am sure. But I think it should come naturally for a long period of time.
How to make him or help him to be closer to me not just have sex and they just be distant.

Guys please help.
Guys what makes you emotionally attached?
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