Met a girl
I (21M) met a girl at a night club. She started talking to me and we danced together. We went to get drinks and in a drunken haze I realised she had already paid for my drink and hers before I could get out my wallet. We sat down at a table and kept talking for a while. Eventually we went back to the dance floor and kissed. At around 4 am we left the club and headed to my place. We got ready for bed as my roommate and my friends out of town I had left to the club with originally came to the apartment to sleep as well. Me and the girl cuddled and made out a few times in bed. We didn't have sex. In the morning she left quite swiftly back home as she had plans that day.
She had clearly expressed that she liked me as I did her. Now I can't help but feel very strongly attached to her even though we met and knew each other for only about 12 hours. I found her used nicotine pouch on the bed but I don't feel inclined to throw it out which I acknowledge is weird and creepy. I want to be able to move on from her but I also don't want her face to fade from my memory. I had a relatively long relationship which ended around half a year ago and I'm thinking if its lead to some underlying issues relating to my current feelings with this girl. I hate that I'm hyperfixating on this event that I feel like most people could shrug off more easily.
Any thoughts, comments or questions are appreciated.