Should I tell him more?
I can understand how your feel, as my husband was very close minded also. He has however come around to realizing that there are some things that defy conditioned logic. But as mentioned, it may not be well received by your boyfriend without actually experiencing things firsthand. This goes back to the skeptic thing.....which for the most part....they have to “see” to believe. Which in my case is what has brought my husband around and opened his eyes to our world. By firsthand experiencing the empathness. With me I didn’t realize that I was an empath until well into out marriage. Synchronicity led me to read several books and stumbling across this site. I did share parts of the books on being an empath with my husband which opened the conversation about the subject. When before long the things I read to him....he would comment “That’s so you!” Perhaps that might be a good way to break the ice on the subject.
As mentioned, you don’t want to go into marriage with secrets. Especially when it involves your very being. If he is really the one meant for you, he should accept all of you. But this is something that you should think very deep about to find your answer. I hope you the best.