No one I’m in a relationship with gives me enough mental stimulation!!! It’s SO ANNOYING

I need some sort of adrenaline or stimulation. My brain feels like it’s lacking something or craving something. Like it’s low on something or something and then I get like a stuck or bored feeling. I’m not having fun in life
I’m bored no matter what I do. I’m posting this In relationships cause I don’t know if I’m picking the wrong people for me to be in relationships with and that’s why I find them boring, or if I’m the one whose boring, or if I have some sort of chemical low in my brain making me feel bored. Pleaseeee if someone else has experienced how I’m feeling reach out. I don’t know why I’m feeling this way but I just know I hate it. I wish I knew why I feel this way cause I think it could better my relationships moving forward