Does Ketu destroy marriage in the 7th house?

In the birth chart, the 7th house is considered the significator house of marriage, while Ketu's significatorship means spirituality, detachment, loneliness, etc. That means there is a contradiction between the significations of both the 7th house and Ketu for each other; therefore, saying that Ketu in the 7th house will break the marriage would be wrong. It would be appropriate to give predictions after studying the entire horoscope because sometimes Ketu may be in the 7th house, but when there is an aspect of a benefic planet like Jupiter or Venus on the 7th house or on the 7th lord, it will give marital happiness. Also, for this, one will have to look at which zodiac sign, which nakshatra, and at how many degrees Ketu is situated.

Generally, when Ketu is in the 7th house, sometimes mental and emotional distance can happen from the partner, a feeling that something is lacking in the marriage can arise, the person's inclination towards spirituality can become greater, [and] an important life will unfold after marriage where the person's mental inclination can be attracted toward spirituality. Therefore, Ketu in the seventh house does not mean it will definitely make marital life unsuccessful; a prediction of marital happiness or sorrow can be stated only after a deep study of the complete horoscope and the Navamsha chart.