Why don't you ask him all these questions? Communication is important on any topic in a relationship. 

I love when my man cums on my tatas????it turns me on

It's a pretty erotic scene: a body part he likes covered in something he owns, it's like a little claim (and perhaps he's excited only he's allowed to see you like that)

Some guys just fantasize because of porn but some don't like me I don't care for it