How should I respond to people who are very nice but really weird?

Had this happen this evening. Ran into a really weird yet very friendly younger man. The way he was acting had me wondering if he was gay (I'm not). He wasn't creepy about it at least. He was socially awkward, but he wanted to keep on talking to me and I'm a complete stranger. He brought up lots of random issues about his family within 5 mins of talking to him (his Grandfather recently passed away and he's taking care of his Grandma).

I'm usually friendly with strangers. Man, woman, young, old I try to put my best foot forward. But I can usually sense when someone doesn't want to over-engage. Especially if it's another man who might think being too nice might come off as something else.

Anyway, I'll personally take weird & friendly vs. "normal" and hostile.

How should I respond to people who are very nice but really weird?
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