Update 29/10/11:
I managed to ask my sister about it this morning to clarify some of the vaguer points based upon feedback from the thread and to show her what information [http://anepigone.blogspot.com/2010/03/infidelity-rates-by-ethnicity.html] I [http://anepigone.blogspot.com/2009/05/black-asian-men-most-least-likely-to_08.html] have [http://www.alternet.org/sex/81022/?page=entire] so [http://findarticles.com/p/articles/mi_m1077/is_n1_v54/ai_21270363/?tag=content;col1] far [http://www.divorce360.com/divorce-articles/news/trends/african-americans-and-marriage.aspx?artid=1176], here's what I've found out from her;
Q: What do you mean by 'half-caste' men exactly?
A: Muslims and Arabic men specifically, I don't mean black men.
Q: When you say that most white men cheat, is this based upon some previous dating experience from when you were younger that I don't know about?
A: No, it's in comparison to Muslims and you see it all the time on TV about how X cheated on Y, but you never hear about any Muslim men cheating on their wife.
Q: Tiger Woods.
A: He's just one man, there are always one or two.
I have to admit I've not heard of Muslims cheating so I couldn't just refute her there, also the [/url=http://anepigone.blogspot.com/2010/03/infidelity-rates-by-ethnicity.html]best[/url] list of statistics that has been suggested so far didn't include any devout Muslim countries on the list. This may be because those countries tend to be insular or because Muslims wouldn't want to admit to it or perhaps they truly don't cheat, I don't know.
Is she right on that at all? I'm unsure. None of the statistics suggested so far mention those countries.
(Also, if there's a term that people would prefer I use than "Muslim" please tell me.)