ONS gone wrong! left her a surprise though

Last week, I was at a nightclub. Made eye contact with a girl - she was attractive... we danced together, I bought her drinks and things were getting heated. It was about 3 am, the night club had its last call and we were heading out. She said she doesnt live that far and invited me over to her place for a few drinks. We got on a cab headed to her place, we were making out in the car and by the time we reached her place we couldn't keep our hands off each other. As soon as we entered, we started making out intensely, she said that she can only cum from clitoral stimulation and seldom cums through intercourse. I said that i will keep that in mind..... I go down on her for 40 mins flat, eating her out and finger banging her. she is having a great time, roughly about 40 mins later... she cums hard. I get up from between her legs thinking its now my turn to cum and get ready to fuck her. She checks her phone and tells me that one of her friend just messaged her and that its an "emergency" (this was total BS, I could tell from way she spoke) She has leave which means she wants me to get out. I tell her that i can be quick to cum cos i have been rock hard, but she tells me she doesn't have the time, and asks me to go to the bathroom and finish myself off in a dismissive way- this after me going down on her for 40 mins to make her cum. So I went to the bathroom, jerked myself off and came inside her shampoo bottle... gave that bottle a good shake.... cleaned up myself... said goodbye to her and left. I dont feel bad about this