AITA for telling my boyfriend (22M) that his opinion doesn’t decide whether I get a breast reduction?

I (21F) have been seriously considering a breast reduction for a while now. I have larger breasts, and they cause me constant back pain, discomfort, and make it difficult to find clothes that fit properly. I’ve done my research and have already had consultations with a couple of doctors to see what my options are.

When I brought this up to my boyfriend (22M), he immediately got upset. He told me he doesn’t want me to go through with it because he loves my body the way it is, and he feels like I’d be “changing” a part of myself unnecessarily. I tried explaining that this is about my comfort and health, not about how I look or how he feels about my body.

Then he said something along the lines of, “Well, I’d hope you’d at least get my input before making a decision like this.” I told him that while I value his opinion, ultimately it’s my body and my choice, and I don’t need his approval to go through with a surgery that’s for my well-being.

He hasn’t been outright hostile, but he’s been cold and distant ever since. He says he feels like I’m dismissing his feelings. I don’t think I’ve done anything wrong, but now I’m starting to question if I was too blunt in my response.

AITA?