Does it matter?
You had sex with a girl and you liked it. Okay. Do you want to date her? Do you want to have sex with her again? You can do all of that and then if it doesn’t work out then maybe later down the line you’ll find a boy you’re attracted to and date/have sex with him. Maybe you’ll like that more, maybe you’ll like being with a girl more, maybe you’ll like both for the different pleasures it gave you!
Don’t rush into a gay panic. Enjoying sex with a girl simply means that you enjoyed having sex with that one particular girl. It does NOT mean that you now have to swear off boys forever, cut your hair like Justin Bieber, and eternally doom your closet to plaid button downs. (JOKING.) I mean, really, calm down. You’re not a lesbian just because you enjoyed having someone go down on you. It’s a very pleasurable sex act…
Focus on whether or not you actually want to be with the girl you had sex with. Not because she’s a girl, but because you like her, you’re attracted to her, and you want to do all those things you do with a bf/gf – cuddle, kiss, fuck, hold her hand, cry on her shoulder, bring her soup when she’s sick, dance with her at a club, talk to her about everything and anything, laugh until you cry, sit on her lap even when there’s plenty of room elsewhere, etc.
If that’s not what you want, then you’ll meet someone else you’re attracted to. Could be a guy. Could be a girl. Just go with it. We like people for being who they are, not for being a certain gender.