when i was younger that would have been a deal breaker.
now i’m old....if i found out he had cheated in the past i would let it go.
When I was younger, single, my first steady girlfriend cheated on me ... same happened with the second ... and they dumped me after they cheated because they did not want to be committed. They should have dumped me first. Anyway, I picked up on the way the dating game was played back then .... all is fair in love and war kind of thing. Not justifying cheating while dating, because if one gets too used to cheating when dating, I can see for many the learned behavior can spill over into marriage when things get “real” or challenges arise.
But once engaged and married ... I was totally 1000% faithful.