I think perhaps part of Anthony's bum reservations depend on history. Anthony would have been a young man during the AIDS crisis when it was thought that receiving anal was how you got it. Mind you, whatever his reservations, I don't think it's fair or right for the poet (wtf is his name?) to dismiss his boundaries. Some men genuinely don't want to receive or give, just as some women genuinely don't want to give or receive and that should be fine. Whatever your sexual boundaries, if your partner wants to break them then that sir/ma'am/tha'am is a red flag.