I'm a bit confused, help?

ok so me and my best friend have known each other since 2nd grade and are the bestest of friends, like conjoined twins or something. but in 7th grade she came over to spend the night (nothing new) and we stayed up really late talking about boys....then she said we should practice kissing, "just so we're ready" but instead we kinda.....had sex. so we decided that our relationship was to be top secret and we did stuff after school in her room and in the trailer behind her house. as we progressed we ended up trying something and it popped her cherry (on accident) she was pissed. but we just pretended like nothing happened or something and went on the next day. a week or two into it we were in the trailer and she was trying to get me to do stuff but i told her i didn't think i was gay and that i wanted to stop. she locked me out of the trailer and didn't talk to me till the next day and she didn't say a word about it. now we're in highschool (Jr. year) and we still haven't talked about it. she acts like it didn't happen. currently she's still a virgin and i've had sex with one boy. i only recently moved to her school so we have had much contact till this year but being back with her every day, spending the night and hanging out with her like 24/7 i think i mite be in love with her. i mean i've always loved her but as a best closest friend kinda way. and sometimes when we're laying in her bed just talking (no one else) it kinda feels like she mite still have feeling for me but i'm not sure anymore. and yes i've tried to talk to her about it but when ever i try to creep it into our conversation it seems she dodges it and she's embarrassed that she even did it in the first place. i don't know what to do?, i don't even know if i'm gay or not, im just really confused and could use some insites (btw im using my friends yahoo so no Avery is not gay, im just not bold enough to use my own name)