okay, I need some help...

heres my backround story. me and one of my best 프렌즈 went to the 바닷가, 비치 recently. after swimming and stuff we lay out on our towels and tanned. my eyes were closed but suddenly my friend was ontop of me. ive always been straight and i thought she was too... so she was like humping me and squeezing my boobs. i started to feel kinda horny and she took my hands and put them on her boobs. kind of embarrassing but i started squeezing them. this turned her on 더 많이 and she stripped off her bikini. ive always thought she was pretty but i realized she was totally SEXY! we kept humping and stuff, we fooled around for a while. i never took off my clothes but all i had on was a bikini. im starting 2 think im bi, ive never opposed 2 bi/gay ppl but its just surprising for me. so today i got a call from her and i didnt pick up. in the message she told me to meet her in her car in a parking lot tomorrow. should i go? i know that im the only person that can answer this myself but i just want some advice.