Emotional safety first (Moon compatibility)
The most important compatibility factor in Vedic astrology is the Moon. Your emotional nature. When two Moons harmonize, the relationship feels safe; you can rest with the person. When they clash, even strong attraction feels restless. Sun-sign compatibility misses this entirely, which is why Western sun-sign matches so often feel wrong in practice.
Attraction vs. lasting (Venus-Mars and the 7th lord)
The Venus-Mars dynamic between your charts shows chemistry and desire. The spark. But spark is not staying power. Whether it lasts is read from the 7th lords of both charts and the deeper structure: do your charts support commitment, or just attraction that burns and fades? Reading both tells you whether this is a relationship or a phase.
The traditional check (Kuta matching)
Vedic astrology has a centuries-old compatibility system (Ashtakuta / guna milan, plus Rajju, Vedha, and others) that scores how two charts fit across emotional, physical, and karmic dimensions. It is more rigorous than any sun-sign quiz, and it is read from both real birth charts, which is the only way "are we compatible" gets a real answer rather than a guess.