What the real cause and meaning of "There is nothing between us" ?

Anonymous
I live in such a place where there are no proper girls that I feel like getting romantically connected to. I generally try to get some online on dating sites , Facebook and such. I've tried to connect to many and they continue to chat with me and seem interested enough. When this continues for about a month, I generally try to express my desire and they all have ended up saying "There's nothing between us"... So I am baffled to know what causes some girl to say this and what is the solution to this ?
What the real cause and meaning of "There is nothing between us" ?
2 Opinion