How come this didn’t happen to us?

I went to a couple of bars with my friend last night. While we were dancing at the first one, a guy came over and started dancing with us and told us we were pretty and asked our names. My friend started flirting with him in hopes of getting him to buy us free drinks and he didn’t offer lol but he definitely flirted back. Also at another club we went to my friend brought my drinks for me then we sat down and talked and went to the dance floor for a while. After a while of dancing a guy approached her then around the same time, a guy approached me and started dancing with me. The guy was really into it but the guys didn’t buy us drinks lol. To be fair we were pretty far from the bar and on the dance floor. And the first bar we went to I didn’t really see any girls getting approached.
How come they didn’t buy us drinks?
How come this didn’t happen to us?
Post Opinion