I think the ideas that anything related to religion is based on over thinkng the whole situation in the first place. I don't think that from the evidence presented we can resolve that he's not responded based on this. There's just nothing there to assume this, it's all just rationalizing and overanalyzing it.

Also whether he is rejecting you or not is once again, overanalyzing the situation and I wouldn't write it off as that. Again I say it's more likely your statement after the fact that you did indeed consent to sex with him then subsequently put out the "friend" thing makes me think more like he feels rejected or brushed off. Thing is, if that's the case and he feels you just put him in the friend zone after sex, he's really not going to be very inclined to reply is he? I mean I know I don't have sex with a woman unless I feel strongly for her and if she in turn said these things it would feel very much like a rejection and I'd probably assume she didn't care if I texted back or anything. Granted if he doesn't feel that way about sex, I could be wrong but then we dont' have evidence that he's a "player" and does that, do we?

I'd go out of my way and let him know you want to keep in touch, if that's what you want from him and leave it at that. If you're not totally rejecting him let him know that and then let it go. If he still doesn't respond, I'd move on.