Rimming

I am an Alpha and my boyfriend is my faggot. We've been together for almost 2 years and in the last 6 months he's been obsessed with rimming me. He loves to worship my ass while I'm in the couch sitting on his face, he rubs his tongue on my sweaty hole for hours and hours. Sometimes I jerk off with his tongue in my hole and then I turn to cum in his mouth.

I don't really care about this to be honest, but I don't mind it either. He is a good fag so I like to reward him too. Sometimes we're coming back home in the car and while he drives he already start saying that he wants to worship my ass.

However, I want to know more about this habit. Considering your experience, do you think there is any chance of this habit escalating to him wanting to fuck my ass? There's no chance this is going to happen. How normal is it for faggots to love rimming a hole that they'll never own? I have been thinking about cutting this habit, but I know he'll feel disappointed and consequently will be less obedient.