Xaro Xhoan Daxos is described as crying to Dany many times in the "Song of Ice and Fire" series. It's said in "A Clash for Kings" that in Qarth people who don't cry are uncivilized, so it’s very common to be having a conversation with a Qartheen and they suddenly start crying over the drop of a hat.
Daenerys has to learn to ignore his tears to get on with her business, because seriously the guy cries at everything. She says she doesn't want to marry him, he sobs. You get the picture.