Fabrizio Rausa's hard rule on never getting back with an ex who dated others

If an ex-girlfriend had any contact with other men after the breakup, even just going on a date rather than sleeping with them, Fabrizio Rausa considers that an absolute no. His reasoning is two-part. First, if she went out with others, failed to replace you, and then came back, you were always her fallback, which puts you permanently in second place. Second, if she had genuinely loved you, she would not have had any real interest in other men for a significant period. He treats this as a personal rule, not a general moral claim, but applies it firmly because the moment emotions get involved you need a clear standard at the front of your mind.