Talking of sex is ok. However, I'm not going to just up and mention my boyfriend plowing my ass the night before.
..but, you just did... right?
Actually no I didn't. I have only seen my boyfriend, publicly, for a few moments in the past week. So no ass plowing then. I'm just saying that it's ok to talk sex, but not too personal. And if there are issues about sex, then YES please do talk about them, they can't be resolved otherwise.
I have no trouble talking about what I like or any of that, I'm talking saying something like "I got such amazing ass sex last night, he is built like this and he did it like that." I've never talked liked. However, if you want to talk about what I find fun and what is a good position, fuck yeah I'll still talk your ear off.