Challenges in Marriage
Venus is karka for marriage. For spouse Venus is karka for male and Mars is karka for female. While reading charts we need to focus on mars and Venus if we are checking for marriage related topic. If Venus placement in karmic sign and houses then chances of separation are there in marriage. Karmic signs are Scorpio and Aquarius as they have lord ship of rahu and ketu. If Venus (for male) and mars(for female) is in trine to ketu or just one house behind ketu then also there will be challenges in marriage or marriage will happen late. And if D9 Chart has lagna rising of Saturn, mercury and ketu then it gives confirmation for challenging marital bliss. Also need to check 4th house of D9 chart because it represents happiness from marriage and if any malefic planets influence is there or any 6,8,12th lord influence then person remain dissatisfied from marriage in that case they try to find peace in some other place so chances of extra marital affair is seen. Venus connection to mars sign in D9 also leads to heavy sexual energy and multiple sexual relationships.

In the above chart placement of ketu next to Venus, Saturn aspect on 7th lord, and in D9 4th lord is debilitated and Venus goes in 8th house. This person had extra marital affair and Inspite of having good spouse he found happiness in other person.