Had a 1.5 year ltr, and there was another girl, let's call her Aria, who was close acquintances with my ex about 2 months ago, she came closer to me and we kept meeting each other randomly on saturdays at a club, went out for a smoke and had chats etc. she kinda opened up to me and I did too, not too much, she asked me about my ltr and how I felt, I said that I'd break up as she was going on a 15 day trip with school program and I don't like distances. That night we roll back into the club and start dancing, she starts rubbing on my cock and some guy friend tells me "bro chill you got a gf" (small town, everybody knows each other) So I let it go.

Few weeks later, I break up with the ex and she says " Aria said you got drunk one night and said I'm a slut " meanwhile I never said that shit. Before I broke up I met Aria when I was on a date with my ex, she sees me, smiles and then sees the girl and is kinda cold. Ever since I messaged her merry christmas and she was too cold.

I know I missed a chance here and was stupid enough to not lay secretly as I would innevitably break up, what happened? Right now I'm dating another single hot girl but rly want to lay Aria too, I know this might sound like oneitis and stupid but at least I want an explanation on what happened.