I Have a Girlfriend

So I was from ep, and now I'm here lol.
Anyways, I have a girlfriend currently and I like her a lot, I really do. But She's my first GIRLfriend, I always assumed I was straight and even dated online previously with a boy. I still feel like I AM straight though. I feel like she's the one exception and like if we don't work out I won't like another girl. But I guess I honestly don't know anymore. Labels are so confusing. 😖