Need your advice for my cousin. He wants divorce.

Date of birth 10th sep 1977, 14.58 time, Varanasi

For a saggitarius ascendant, sun Mercury Saturn in 9th house means divorce right ? Someone said if 2nd and 7th lord are in 9th house. Another person said sun and Mercury friends so not easy to break marriage.This marriage has been turbulent and volatile with many occassions for divorce. Venus and moon in eight house. Mars and Jupiter in 7th house. ketu in 4th and rahu in 10th, Both have extra marital affairs, both have alcohol issues, they are faking or pulling for sake of kids, society, avoid paying alumni, and wife obviously needs social status and security of marriage. Husband goes around telling everyone he is oppressed by his wife and she forces and pressuries him for conjugal relation and society. Both are split personalities. Show they are soft spoken, religious, spiritual but very aggressive and polluted in heart. Husband is highly educated – IIT Madras BTech. Wife is basic education.