<human>: Give me the gist of the text in a nutshell

So I broke up with this guy a few weeks ago, but it was pretty obvious to both of us that we weren't compatible. I really felt like he left the break pretty ambivalently, if not angry at me and even though I always feel terrible after breaking up with someone, I was feeling really relieved and ready to move on. 

Fast forward to last Friday night - he sends me a text at 2:30am telling me "you should have come out tonight, all your friends were here", referring to a mutually known bar. I was out somewhere else and said "Ah I know. I was at [so and so bar]". He responds with "Right on" and that was it. 

What is this about? It was just so random, I though I'd see if anyone on reddit had analysis of this. Thank you in advance!
<bot>: After a pretty uneventful/mutual breakup 3 weeks ago, ex sends random late night text. Why would he do that? We have zero friend potential and he's not the type for a booty call.