I do remember Charity sleeping with Robert. It was around the time she was with Chris.
With Jai and Jimmy, I think their friendship was recent b/c I remember them loathing each other when Jai was with Charity. I think it had to do with a business deal or something. I hope they grow on Jimmy and Jai's friendship b/c they are two characters that are isolated and have no real companions. Jimmy hasn't really had anyone since they killed Carl (ooo that still pisses me off), and Jai has been a prick, so he rarely had friends. Its refreshing to see some potential between these two.
I loved the communal feel today too.