Once. Her farmer parents found out and refused a relationship with a foreigner.

Only if they catch the BF cheating.

they only will break up with a foreigner if the foreigner turns out to be a complete weirdo or infidelity and if the parents dont accept it.

The biggest three reasons I have heard for girls breaking up with guys are:

1) He won't put a ring on her finger fast enough to please her family.

2) She found somebody better.  Trust me, just because they are dating does not mean they don't keep looking for better prospects.

or 
3) Her family won't let her marry a foreigner.

I have dumped two...

1. Immatured, no self-confidence...

2. Controlling, manipulating, arrogant...

we grew apart eventually.

I was dumped once.

Technically, I was the one to end it, but I guess it was already over the moment she fucked that other guy.

Xpat.John's number 2 is spot on.

Was dumped once myself.  She found a new guy who was rich.  That he was 20 years older than her was not the problem.

hmm,i never had,he was my first foreign bf.if he infidelity,i will break up with him.

never had one dump me, i remember dumping a nice lady about 40 when she told me about dating a doctor for a year before she slept with him and then found out he promised his deceased wife never to remarry. dumped her as soon as she finished the story , very upset, asking why, the man is letting a selfish dead woman control his life and your forty with only a few years of physical pleasure left and made him wait a year and wasted a year of your life. your both crazy. miss her though, only d cup i found in china.

Not often enough for this old coot.  I should be so lucky...