I think it's time to think about casually dating if or when you are ready to close the door on your marriage. However, until or unless that point comes I would stick to doing things which are more social and less potentially complicated..
There is plenty of opportunity to get out and about looking attractive, doing interesting new things and meeting others without causing potential hurt to yourself or to a new woman by getting involved before you are truly ready to leave your marriage behind.
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus