Typical college hookup (MF) turns taboo after she passes out

I was a junior in college, gearing up to try to get some after a dry spell, and thankfully it was Halloween. My roommates and I went to our friend Dan's place as he was having a party, and I had gone as an 'evil surgeon' in scrubs with some fake blood over them.

The party was good, with the music bumping and the drinks flowing, and I eventually met this cute redhead named Sara. We struggled to talk over the music, but she was quite flirty and obviously into me. She wasn't the hottest girl I'd seen, but seemed cool and down for some fun, so when she asked if I wanted to go over to her place I was immediately down and excited for the chance to release some of that pent up horniness.

On the walk over to her place we stopped two or three times, suddenly grabbing each other and making out as the passion boiled over. Luckily it was dark and late, so there was some privacy to explore each other's mouths, and I quickly became very hard. We finally stumbled through her door and went to her room, where she immediately stripped down to a white thong and bra and kissed me.