Is AUTHOR wrong in the post ? POST : Notice the quotation marks, since those are Sarah's (my girlfriend) words, not mine.

So, I'm a competitive swimmer, and recently some kids at my school have started a water polo team, and asked me to join. I said sure, since all my clubs (FBLA, Investing Club, DECA) ended a few weeks ago. It's not too serious as of now, and is more of just a fun thing, I guess. For example, a lot of guys are just wearing normal swim trunks, and a lot of girls are just wearing bikinis, even though that's not the official uniform.

And that's where the problem comes in. Sarah is a bit insecure of this, and doesn't like that I'm spending every day after school playing water polo with a bunch of fit, half-naked girls. 

So she asked me to quit. I just said I'm not going to, for a few reasons:

1) Water polo is really fun 

2) I need to practice swimming in the off-season, and a water polo is a novel, more fun way of doing it than just swimming laps.

3) Her demands are ridiculous and I don't think she should control what I can or can't do because of her jealousy. I don't tell her, for example, not to hang out with her guy friends. So I don't see why should be able to order me around. 

I feel like both of us just can't see the other side's logic, so aita?