Why do I feel uncomfortable ?

So my husband (of three months) told me today that he has this fantasy about ejaculating on me instead of in me. He wanted to pull out and ejaculate onto my boobs. I told him he could, and I was trying to hide that it made me nervous and uncomfortable. He didn’t do it cause he ended up ejaculating when he was inside me, he couldn’t control it.

But it still makes me feel uncomfortable that he wants to do that and I don’t know why.

I want to give him his fantasy. I just don’t understand why I’m even uncomfortable. Shouldn’t it be sexy and amazing to have him do that? I’m confused and irritated with myself and I don’t know what to do. I’m scared of hurting his feelings and tearing down his confidence.

Has anyone experienced their husbands wanting this? Have you tried it? Is it a good experience?