What could be my exes motives?

Me and my ex broke up a year ago because I wasn't as ready for a relationship as much as I thought I would be. My ex sells products and recently I bought some from him because my mom buys some from him. First he came to my house to bring me the products and we ended up talking about my life and accomplishments and he listened to me talk for an hour. Later, he wanted to check up with me to see how the products are going for me but he wanted to meet in person to talk about the progression of the products. When we met in person, we barely talked about the products at all and he was asking me about my life, my parents, and my education (I want to be a doctor) and he asked where do I see myself in the future. It eventually got to the point where he kept talking about him wanting a wife and kids in his future and he seemed shocked when I said I didn't want those things (as if right now because I'm in school) as a part of my life. Lately he has been mentioning how he wants a family a lot and I thought that was weird conversation to have with an ex. He also says slick things, he loves to hear about how I'm doing, and his eye contact is strong. I don't want to think too much about it, but is there any motives behind this?

What could be my exes motives?
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