Looking at your Natal chart we see that Virgo sign is there in 7th house, and Mercury the lord of Virgo is posited in the 7th house. 7th house is the prime house of marriage and spouse. Mercury the 7th lord is combust which is not good. As the planet gets weak under the influence of Sun. Rahu in the 3rd house aspects the 7th house and 7th lord. Venus the karka for marriage is in the 8th house and conjoined with 12th lord Saturn.
Your horoscope is weak on the marital front and therefore marriage should be done after proper matching of the horoscope for marital happiness.