Your S/O sounds exactly like mine. I had APL hair when I started. I dunno if he thought I would shave it all off bald first or what but he kind of freaked. I started wearing braid outs just because and he liked that style. Then I showed him some pics of natural hair styles that he really liked too.
I reminded him that I can cut this relaxed hair off and have hair down to my butt tomorrow. Natural hair today...silky malaysian weave tomorrow. And last, I reminded him that it was MY HAIR.
I think I hesitated for about a year because of my S/O and I wish I never did. I'd be so much better off.