I don't know but I think there is something in their history. I don't think that Bela is his daughter that would just be too strange but maybe something that Bobby has done for her family, I don't know I'm just guessing.

Did Bobby say to Dean in a recent episode (not sure which) that he HADN'T saved Bela's life? Or did I just dream that? And Bobby looked puzzled when Bela answered him "I'm surprised you don't remember?...Flagstaff?" when he asked why she was helping them in Episode 3x10 "Dream a little dream of me". Definitely something going on I think...

Bobby said that the thing in Flagstaff was an amulet and that he gave her a good deal.

Which is strange in itself; she's supposed to be really self centred and profit driven - why help them (to help Bobby) just because he gave her a good deal who knows how long ago? And she helped by providing the dream root - why carry on helping once he was out of the "coma"? It definitely seems that there's more to it in my opinion - why would the script writers have her lie about her reasons to help? (Unless the amulet is supposed to have saved her life? But why would she think Bobby knew that?)

Yes i think that they will be seeing more of each other

Well, I think that she helped out a bit more than she needed to because she was after the Colt. But who knows, there could be something up that we don't know about.

You guys have dirty little minds, you know that?

Didn't Bela just lie about Flagstaff/wanting to help Bobby out because he'd saved her in the past? Her real reason for helping in that episode was to get the opportunity to steal the Colt, but obviously she wasn't going to admit that at the time.