Relationships are like glass, if you drop them, they shatter.
Inarguably, the Moon and Venus rule the list when it comes to finding reasons behind modern breakup in astrology.
The presence of Mars, Venus, and Rahu in the 6th house can bring truckloads of arguments and disputes between the couple.
The doshas like Sarpa Dosha, Kuja Dosha, and Rahu Dosha determine whether a relationship would come to its end or not.
Keep an open mind for things, be understanding, and if things go out of hand, seek professional astrology advice.