am i bisexual ? or am i just confused

so there’s this girl, who i started snapping, or i guess i have a streak with her and i have her on fb too. she’s bisexual i think and i have only been with guys, meanwhile she has had girlfriends. anyways we text here and there and when she does text me i get nervous, like i want to like her but also i’m scared bc i only been with guys. it’s just so confusing, i find her attractive too ( i am a girl btw )