Poe is just so nice to BB-8 that I imagine he’s like that to all droids. And you know BB-8 always talks him up to the other droids too, like “I have the best Master! He is good and kind and mine!” 

Imagine the droids deciding to investigate and finding that they like this human, that he is Good and he is Friend. And eventually, Poe has this huge line of droids following him around like a mother duckling. You never have to look for Poe anymore; you just have to follow the beeping and chirping of a tiny army of droids, and there he is.