I think you should brace yourself for something you won’t want to hear.
in my experience, even shy guys make their needs known. If he wanted something more, he would be asking you.
sounds like he has his ideal - casual sex on tap. Men have lots and lots of time on their side. He could do this for years until he meets “the one”.
You need to ask him, so you know. If he says yes, no more anxiety. But if he gives you the runaround, face facts that he’s not that into you.
From my experience, these guys with casual sex set ups, have casual sex set-ups with multiple
women, so they are living the dream.
I’ve had female friends suddenly turn up at their fook buddy’s place, only to find a model open the door with a young baby. Then the illusion comes crashing down.
As I said, brace yourself. But at least you will know and not feel used.