Is NOBODY wrong in the post ? POST : I know that title sounds bad but there's really no other way to phrase it.

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Okay, for the context. I've got two friends, X and Y. I was hosting a game of Cards Against Humanity recently and I invited X since she's got a good sense of humor for CAH. X said sure, she could come, and then asked me if Y was invited. Y has that same sense of humor, so it's a reasonable question.

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The thing is that X and Y are great people when they're separate, but whenever they're together they just go off on whatever they're talking about and leave anyone else as the third wheel. I know this because I did a school project with both of them, we went to get food after we were done working, and I was very much just awkwardly standing by.

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X is more reasonable about it, since she rarely talks about Y if he's not around. But Y is always going on about X.  And indeed, Y told me that he's got a crush on X, and I'm 95% sure X likes Y as well.

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Which brings me back to the Cards Against Humanity game. I told X that I wasn't going to invite Y because I thought four people was the ideal number for CAH, which is true, but also because I wanted her to be present and focused on the game and enjoying the company of others, instead of just talking with Y the entire time.

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So, am I the asshole? My side of the argument is that I wanted to spend time with X before she inevitably starts dating and becomes completely inseparable from Y, but the negative side, of course, is that I indirectly stopped X from being with someone she might have preferred to be with.

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I'm not trying to blame X nor Y here, they've done nothing wrong; this is a scenario where either I'm the asshole or nobody is.