I wanna know from Taurus people

I've known this Taurus guy for almost a year. We drifted apart for no reason after 4 months, but we started to talking again this month. He is doing residency at the hospital, and he really has no time. But when he can txt me, he does, and he never ignores my txt. And he is very sexual, and we used to do those sexy txting to each other. But it all stopped for 2 weeks now. He will still respond to my txt. It's not that I really miss sex talk, but I am just simply wondering why all of the sudden he stopped. like it was sooooo hot and now it's cool, not cold, but cool. any opinion?

I am Aquarius.. yea, I know we are supposed to be bad match..
Well, he is doing internship (to be more accurate) at hospital, so we are not able to see each other as much as we like to. That's why we started doing hot txting. As much as he is very sexual person, his main priority is finishing med school. Maybe when he really needs to focus, he is not too sexual...