Saturn
 ( Shani ) and Ketu in 7th house of Gemini ( Mithuna ) rashi ( zodiac ) 
is not very encouraging. Saturn and ketu both are going to give negative
 result from marriage point of view as 7th house denotes marriage. 
Saturn will delay the marriage and would create hurdles in finalization 
of marriage. 
On the other hand Ketu who has the nature of loosing 
interest on the house matter where it is positioned because of the past 
life karma where it had experienced the 7th house affairs, so in this 
life doesn't have interest in such matter. This effect of ketu will not 
produce interest in the person to get married. He will love to leave an 
unmarried life ( Vairagya ). 
With other planets combination effect it is
 also seen that Saturn and Ketu in 7th house give intercaste marriage ( 
not marrying in same community ) and sometime unnatural difference in 
husband and wife. May be the wife of the person is much more older than 
his husband. Marries a persons having different religion.
