Well...I had a Japanese exchange student come to my school and due to language barriers did not know she was married and had a kid already back in Japan waiting for her. And here she was going on dates with Americans-She only said she wanted to see what it was like having an American boyfriend since that's what all her friends talked about back home. Mind you, she was only 16 at the time I met her...
any girl that goes overseas as an exchange student has a high possibility of cheating... as there bf are back home and no one will know what they get up to... then again there are some that very faithful that I have met...