Venus and Jupiter are benefic planets. The seventh house is of the spouse. The placement of these planets in the seventh house or their impact on this house decides how much happiness or sorrow you will get from your married life. Venus in the man's kundali and Jupiter in the wife's kundali is the factor which decides how much happiness they will have in their married life. The placement of these planets and the houses which they aspect, helps choose the right life partener and get a happy married life from the kundalis of man and woman.
The principle of jyotish is that Jupiter has a bad effect on the house it is in and it has a positive influence on those houses which it aspects. If Jupiter is situated in the seventh house of any man's or woman's kundali then he or she may have a late marriage or would not have a very happy married life. There may be problems between husband and wife and there could be undue conflicts in the couple.
The relationship of Jupiter and Venus with the seventh lord is important to get a good married life. If in a man's or a woman's kundali, Jupiter or Venus the seventh house, are placed in it or the seventh lord is aspected or placed in conjunction with them, the person will have a virtuous and and cultured spouse.
Like Jupiter, Venus is also bad for married life if it is in the seventh house. Venus in the seventh house makes a person prone to seek intimacy with other people after marriage. It brings problems and it removes the bliss from the married life. When Venus and Jupiter aspect the seventh house and the seventh lord then the married life would be enjoyable. If Jupiter in the Ascendent suffers from the Papkartari yoga then its aspect on the seventh house does not give good result. If the seventh lord is weak or conjunction with Venus in this situation, then the chances of a happy married life are reduced even more.