Looking at your Horoscope we see that your Ascendant is Gemini and 7th house is ruled by Sagittarius. Its lord Jupiter is exalted but in an inimical distance to the 7th house which is not good. Sun is posited in lagan and it aspects the 7th house of marriage. Rahu in the 7th house is never auspicious. Your 7th house and 7th lord is weak and hence marriage should be done after proper matching of the Horoscope or Kundli milan.