You meet a guy, you like him, once you start sleeping with him you notice a scar on his manhood, you ask him what it's from - he had an injury sustained from sex and it was repaired (everything works). What is your reaction?
Been there done that, actually lol. I'd ask to hear the story, (how could you not!) and I would respectfully understand if he didn't want to share. The story for the one guy a know, a zipper was involved...
Who cares? If you honestly love the guy why should it matter? It's no different than having a scar anywhere else on your body. If she doesn't like you simply because you have a scar down there then she isn't the one for you
I would be like ohh wow glad you were able to get it fixed because I'd be worried that it could have lasting emotional damage for you. But if someones reaction is like ohh gross I don't want anything to do with you they are being a child unless it was gotten in a way that people normal wouldn't stuff. I wouldn't have a issue with it.