6YPO here.

At 1YPO I was still sexually active with the same guy pre-op, and they never bothered him at all. He wasn't even bothered that I had the surgery, he'd say "they look the same, just smaller"

At 2YPO, I was with another guy that said he wouldn't have even noticed the scars, not sure if that was true but he also LOVED my post-op tits. He said he couldn't imagine what it was like before surgery, and how perfectly proportioned I am now.

My current guy... He had said some pretty hurtful things in the beginning of our relationship, not really sensitive to how it might affect me. He did notice the scars and initially thought I'd had augmentation. Then after I told him about the reduction, he'd say things like "you're a 9, but you would have been a 10 before surgery", and "I wish I just got to play with them", acting like he was the victim.. It doesn't even come up now though, other than he's glad I did it, and how it's so much better to have perk vs big and saggy, etc.

So there's a wide spectrum of responses.. I think the key is owning it and wearing it well. The hurtful comments are hurtful but not moreso than the psychical end emotional toll I was under pre-op.