No sex? But oral is okay?

So I have been gone for a week and I hung out with my bf yesterday and we were cuddling and stuff and I asked ( the first time I have ever asked) if we could have sex and he froze and said he doesn't want to have sex anymore cause he feels guilty after cumming? I felt embarrassed for even asking ( I am really shy) he said he wants to wait a month to see how he feels but that oral sex is still on the table ? This just doesn't make sense to me ? So I said alright then if you feel guilty then we don't do anything at all cause by oral he means him only ( I don't like being eat out or anything cause I don't like it and he knows that) I am just confused cause when isn't like this ever and he is usually really nice and cuddly but lately he doesn't say he missed me or anything 😭☹️