drunk sex w/ bff? oops..

okay so me and this girl have been friends for years now, she was my first girl kiss in 8th grade forever ago and we have always lowkey had a thing for each other so 3 days ago we got drunk.. she just started making out with me.. one thing lead to another and we had sex. she has a bf too and before all of that happened she kept saying that she loves me and that we would be so cute together. the next day we really didn't talk about it until she realized she has some hickies.. it was kinda awkward but then she was with her bf the next day. we haven't talked since then.. how should i feel and what should i exactly do in this situation. :((