赤ちゃんをお願いします、とてもきついです

My wife loves anal sex, but the more we fuck her ass, the tighter she gets, she always wants it in her ass hole but she can't, she feels pleasure but with a little discomfort, but she'll try anyway because anal sex is the best for her, she gets more courage when it's another man, it's more enjoyable to fuck with another man and it's easier for another man to fuck her ass because she's more comfortable