taht will create a nice comfortable and caring feeling right from the beginning. But ketu conjunctions can be outgrown.
The confort will always be there, but eventually there may not be anything to do with that person. Any planet on ketu is a planet that a person is using to experience some part of the ketu house, to do someothing to the ketu house, in respect to what the planet is. Once that is done, tis time to move towards the rahu house. People with ketu conjunctions often stay together a lifetime, but its becasue there are other factors, they ketu can be a life long comfortable thing but something else is pulling them forward.
say mars is on the ketu, that means the mars person is helping the ketu person win fight against the programming of the ketu house. Say its saturn, then the saturn person is causing and or helping the ketu person to escape the ketu house becasue saturn is what we have to leave. THis is actually considered a nice connection that can last a long time because we need to move away from the ketu house our entire life especially in the 2nd half. In first half, there will be resistance to that, in second, it will feel good. So a couple with that will have more harmony in the second half of life if other factors give them a continuing destiny.
a benefic planet there gives something that is needed to make peace with the ketu house, finish some growth there or pick up a piece of the old self that was lost in the turbelance of the rahu journey.
The sun anchors a person in the ketu house, makes them find stability and foundation there, so if you have that, it means, its a ketu time for now.