<human>: Summarize the given text in a few sentences.

So, to start. I've been dating my girlfriend [15 F] for about two weeks now. We pretty much started the relationship the moment we starting hanging out properly (we'd seen each other a couple of times before, but only for about 10 minutes or so). I'd known her friend [15 F] for a little bit longer (maybe a couple weeks). Thing was, I had a crush on both of them.

Now, I probably sound like an idiot for doing what I did and starting the relationship with my girlfriend. I'll admit, she definitely deserves someone better than a guy who's more interested in one of her friends.

I find that I'm more interested in the other girl in all respects. Now, I guess they say that 'The grass is always greener', but I liked her more from the start, before I got into a relationship. I'm really at a loss here...

I'm afraid that breaking up with my girlfriend will hurt her quite badly, and I'm not even sure how I would. And even if I did break up with her, there's probably a heightened chance that I'm not going to be able to get with her friend.

Please, I need some advice with this. I know I've messed up, and I accept that, so I just need to work out what to do now.
<bot>: Crushing on a friend of my girlfriend. I find I'm more attracted to said friend of my girlfriend in all respects.