Is this appropriate and is he lying ?

So my partner is a big gamer, he knows I’m not comfortable him talking with females through games. I’m not insecure it’s just I personally don’t like it.

Anyway, he put a name gamer tag, as a joke he put “ anal plunger” bc idk if you guys know like men have the weirdest things they come up with.

Anyway, he went to say “ this gir- said earlier after we won, are you gonna plunge my ass later then?”

I said I’m sorry, a girl said that to you? He then stopped in his tracks and said no no I didn’t I meant to say this guy said that. I know this man well enough to know when he is lying and when he’s honest. I said, that’s legit what you said though? Like you stopped in the middle of saying girl because I think you realized you told on yourself basically, he said no I probably meant to say group of guys. So first you meant to say a guy said it now your saying group of guys? Like that makes even more of no sense. I said just be honest, it clearly upsets me more that your lying about it and he shook his head, rolled his eyes got super like frustrated and said “ if this is how you want to end your night then do that” and got back on his game. I’m upset like joking or not. That is something I clearly find disrespectful which is why I’m not okay with my partner just talking with females on those games bc he was Laughing about her comment. Also I wasn’t home earlier so I wouldn’t know anything of it.

I just feel super like my feelings once again always just get disregarded like when I say I’m upset for whatever reason and it pisses him off he’ll flip it on me and not speak to me and treat me cold.