I have a similar thing but with celery. I cannot stand celery because to me it smells extremely bad. Like, the worst thing I have ever smelled or will smell bad. If there’s even a tiny bit of celery somewhere, I can smell it. I don’t even know how celery tasted because I can’t get it close enough to my mouth to try.
I saw a video of someone teaching himself to like celery, and coerced my girlfriend to do the same - it works!
You literally just start by nibbling a bit every day and start eating more and more as you can handle it. She loves celery now, to the point where she just eats it raw as snacks.
Whether it's worth the apparent torture is up to you. To be frank, picky eaters give me second hand embarrassment when out dining, since you can teach yourself to like basically everything. Usually it's just people who didn't get much variety as children.
I got plenty of variety as a child, but there are some foods I just can't stand. I'm not about to force myself to eat them when I have so many other options.
But I'm glad I wouldn't accidentally end up eating out with you. Someone who cares so much what other people are not eating makes me embarrassed for them.