Dating is an intensely personal topic, and highly controversial as well. I only did it when:
a) I had already filed for D;
b) I had totally moved on;
c) I let my wife know I was going to begin to date;
d) I clearly let the other woman (only ended up having one date) where I was at with my marriage.
Interestingly, it DID work -- immediately. But I wouldn't have ever done it just as a mere "tactic." I had to TRULY be done; otherwise, I was just fighting infidelity with more infidelity.