Guru aaya ghar pehle shaadi samay pe hoye, ban ke rahe jo cheli theek varna tu tu main main hoye.
Jupiter came in the 1st house, marriage happens on time; if she lives like a disciple, it is fine, otherwise there is constant bickering.
The 1st house directly aspects the 7th house of marriage. When Jupiter (the Teacher/Guru) is in the 1st house, it dictates the exact dynamic required for a successful marriage.
Dr. Sharma explains that this placement usually grants marriage at the proper, traditional age ("shaadi samay pe hoye"). However, the survival of the marriage depends entirely on the dynamic between the couple.
Because the native is the "Guru," the spouse must be willing to adopt the role of a willing student or disciple ("ban ke rahe jo cheli"). If the spouse is receptive to guidance, the marriage is blissful. If the spouse challenges the native's authority or wisdom, it leads to endless, exhausting ego clashes and bickering ("tu tu main main hoye").