No idea where to put this. Since I post here most and it's somewhat on topic, Dating it is.
Now and then my neighbor and I hang out on his front porch. He's got a great front porch. We talk, smoke some mary jane, play some of our songs, etc. Tonight it stormed pretty violently, so I went out onto my porch to bring in my freshly planted herbs so they wouldn't get shredded in the wind. He was on his porch, too, and said hello and invited me over to hang out. We watched the torrential downpour, played some guitar, had a good time.
He's a cool guy, but I am not interested in anything more than friendly with him. But I like being neighborly and keeping in touch. We watch each other's backs. I live in a small house within the borders of a major city, alone, so I want to know my neighbors so we can watch out for each other. I took all my neighbors plates of Christmas cookies after I moved in last fall.
Anyway, he has begun to flirt, and he flirts a little bit more every time I see him. Tonight, at the end, he goes, "Let me walk you home."

Then he cutely walked me the 10 feet over to my front door.
Should I come right out and tell him I'm not interested in him in that way, or just continue to be a friendly neighbor but not respond to his flirting?