Well, if "having a double life" now means having an extra-marital affair, I suppose the number of human beings with a "double life" is huge.
Your text seems to imply that adultery is a 'Dominican thing'. That is simply not the case, and can be easily verified.
And being a tiguere and having a second family are quite different. Tigueres normally get involved in serious crimes, such as theft, drug-dealing, and possibly murder. Having a second-family (if that's what it is) may well be immoral (it obviously depends on culture and religion) but to my knowledge is not a crime either in the DR or the US.
I don't even know if the children are his. The articles says nothing about paternity testing. It is obviously to a mother's advantage to claim her children were fathered by a famous and rich man. We need to know if it is true or not.