I've had anal sex with a lot of girls, but it seems like they only want cum in their ass if we are in a serious relationship. I can certainly understand that..
I let him do whatever he wants. He cums in my ass with and without a condom. It's a greet feeling anyway..
Of course he can cum in my ass. I only let guys I know in there, so they usually don't wear a condom. It can be a bit annoying when it keeps leaking out later, but it does feel really good.
I have always considered him ejaculating inside me as an essential part of lovemaking, so if I know the guy to be okay, I'll almost insist he goes bareback, which most guys love. He will only be wearing a condom if he chooses. Ergo, if he's in my botty, (and quite a few have been there) he'll leave his little dribbly deposit inside I love that feeling and cleanup is easy.
Me and my bf don't use condoms. He likes to cum inside me. The only time he won't is if I want to swallow it.