According to Indian astrology someone gets married when he or she is going through Dasha/Antar Dasha of seventh lord, planets placed in seventh house or planets facing seventh house. Dash/Antar Dahsa of 6th lord will not allow for marriage as the 6th is the 12th from 7th house which is loss of marriage.
Now if Dash or Antar Dasha is allowing marriage then transit of planets will make the yoga of marriage. First of all Saturn and Jupiter should occupy or aspect seventh house for giving marriage.
At the same time Mars and Moon should also participate for finalising a marriage in any ones horoscope. We should also consider the 11th , 12th and 2nd house for a happy marriage life as 11th house is for fulfilment of desire, 12th house is for sexual pleasures and 2nd house is for growth of family. Now if all the conditions are supporting any horoscope, the person will get married.
Fifth house should be considered for happy love marriage.
6th house and 10th house are not considered good for marriage as the Dasha or Antar Dasha of 6th or 10th may cause many problems and delay in marriage. Also may have divorces after marriages if the marriages are done in Dasha or Antar dasha of 6th and 10th lord.
If your Dahsa and Antar Dasha is not supporting you for Marriage and Planets in Transits Not allowing you get married you may have many difficulties , delay and unsuccessful Married Life.