I’m not sure if he’s the one

I’ve been in a relationship for 7 years now, currently engaged to be married next year. We have a child together and live together. I do love him. And care about him. At one point being married and loved by him was all I wanted. But now I question if this is the marriage I want for the rest of my life. I question if this is how I want to be loved. He’s a good man with some flaws that I just don’t know if it’s what I want to deal with for rest of my life. We have a really broken past. Our present is good. But I just feel like a part of me is not sure if I want this. I’m not excited to get married. I just don’t understand. Am I growing out of love?