What could I say?

I (27f) agreed to attend a carnival with my coworker (23m), and during some activity I noticed by how he glanced over at me that he was alittle interested. Afterwards he straight up started bringing up marriage (in general) and said he's moving states so he'd like it if I'd move somewhere close. I assumed he was joking but the next day during some convo, he randomly asked if I could introduce him to my family and if I considered him marriage potential. He isn't pushy tho, he just talks a lot about his family which is kinda sweet. I kinda like him so don't know what to say.

What could I say?
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