Scared of the dark, fearless when with bf

So when I was a child I used to have seizures and hallucinate. I was in & out of psychwards for my behavior. My whole family was terrified of me because they honestly believed I was possessed. Anyways, now I'm traumatized from what I used to see or hallucinate about and I'm scared of the dark. I have to have some type of light on to feel safe & even then I'm a little uneasy but force myself to sleep anyways. It's especially hard when my roommate is at work 🙄 I always end up going to my boyfriends because he fights away all of my fears. I know I seem like a child because what kind of 19 year old is afraid of the dark?! But When I'm with him I can sleep with the light off and be perfectly fine. Also, I'm terrified of the ocean but jumped in with him last week to go snorkeling. I freaked out at first but stayed by his side and was no longer afraid anymore. Idk why but I feel like my boyfriend will keep me safe no matter what & it feels amazing to be fearless especially when it's with someone handsome by my sideb