My girlfriend 22 and I have been genuinely exploring and we've enjoyed letting her be more and more slutty with guys, we never have a regular bull always one off hotel meets. Last week we had an older dude late 40s who was kinda pushy and dom, she was giving him head and while she was licking his balls he pushed her head down and lifted his legs and she just started licking his ass, we were eachothers first sexual partners and I've been present for every meet shes had and she has never done this before and we never even discussed it shes never done it to me or any previous bulls. Not sure if im into it and she didn't seem to mind, couldn't tell if he was totally clean or anything. Is it a regular thing for guys to want their ass licked ? And do any other cucks have experience watching their partner do it.