Flirting with girls from the same social circle or group while being single is something that can be done as long as you know the limits.
There should be a degree of understanding between you and these girls in the same social circle or group as yourself.
Everyone should have an awareness of how far the flirting goes.
When you don’t set certain limitations to flirting and how far it goes within your social circle or group, someone ends up getting unnecessarily hurt.
This creates a fracture within the social circle or group that ultimately leads to its end or to certain members breaking off into their own independent, smaller groups.