Boyfriend career choice/jealousy

My boyfriend wants to be a personal trainer, he's really into the gym and goes everyday. I just don't like the idea though it makes me feel uncomfortable... the thought of him wanting to work with girls and probably touching there bodies annoys me. I know it's really ugly of me to feel this way.

Like two months ago I wanted to get my massage license and he said no because it made him uncomfortable. but I feel like being a personal trainer is like the same!! I know we shouldn't control each other career decisions but it will effect each others lives. Any advice? Don't comment if your gonna be an ass lol