May-December relationship

I am 21, messing around with a 45 y/o man. At first it was a little different because I'm used to 20 y/o guys. But, after a week I started to get to know him better and now I seriously kiss him and it feels like he's 20 years younger. I don't see the age gap between us. I love it. I feel protected and cherished because he respects me so much. We haven't had sex or done anything too sexual yet. Mainly kissing and flirting a lot. It just feels like he's the one I'm supposed to be with. Everything just connects and feels whole. He even tells me I make him feel 21 again. Is this a sign or what? I'm not sure where he's supposed to be in my life but it just feels right.