If your boy/girlfriend cheated, would you give them another chance

I probably would give another chance, depending on the conditions, especially if they are very honest. There are too many variables to say 100% whether I would or wouldn't, but I don't think cheating is the worst thing that can happen in a relationship... I mean, your SO could slowly poison you or continuously impregnate and abuse you and all your little bebes or maybe even brainwash you, who knows, but instead they slept with someone else....
Cheating is disgraceful, yes, but I think I'd actually be more disappointed to find out something like a long term partner is gay (100% gay) and used me as a front or something because...wtf, that's way more deceptive than a moment of weakness or what have you...

It seems like infidelity is romanticized in a way. I can't say for certain that I've never been cheated on, but it's never came out if so... so idk, maybe it is as bad as people say... I was once in a similarly shitty position and the worst part was not knowing exactly what happened and never getting a clear answer.