So I was at the bar with my friends enjoying myself. Suddenly 2 girls knocked on my shoulder. I know these girls, 1 of them I want to fuck. They asked if I could buy them 2 shots as they were unable to pay from where they where standing. They offered to pay me back after. I bought them 2 shots and 1 for me. After we did the shots they run away and didn't pay. I didn't want to chase them so after an hour I texted the girl im interested in if the shots tasted good? She said that we will pay, give us your details. So I gave them my details but still didnt recieve any payment. Now I texted "are you both loosers or what?". Still no paying back.

How could I approach this differently? I feel like the biggest simp.