Dating a 29 yr old man

I met this man in Oct we clicked immediately. We have sex almost 2 times a week, he takes me out ect.. my problem is I might be falling for him but he doesn’t want a relationship. I am 22 yrs old. He tells me I’m his main girl that there’s no one else but I always see him dm girls. So idk please help me figure this out. The sex is amazing but I do feel like I’m gonna end up making a fool of myself.