I'm gemini ascendant and my 7th house is the sign of Dhanus. Moon is the lord of 2nd house but it is placed with Ketu in the 7th house of Marriage and Partnership. I've seen in my personal life that my relationships break without any reason. Moreover, I'm a mangleek (Mars in the 4th house) in my Lagna chart.

Is the break in relationships because of Moon and Ketu's conjunction in the 7th house or is it because of me being a mangleek? Please suggest me some remedies for Ketu in the 7th house.