<human>: So I've been with my girlfriend for 9 months now, and it's honestly been amazing.

Recently she went abroad and one night she got extremely drunk and made out with this other girl. (we classified making out as cheating before).

Now she claims that she didn't cheat on me because she only did it to see if she was bisexual or not. The girl she made out with told her she did it and her boyfriend was ok with it.

I feel heartbroken, because I never ever imagined she was capable of doing this, granted it was out of naivety (probably). Actually I don't even know anymore.

I'd appreciate any help, because it was the first time I've been cheated on and I'm lost as hell right now.

Give me the gist of the text in a nutshell
<bot>: I felt my girlfriend cheated on me, said she didn't because she was only finding out if she was bisexual or not.