posted January 04, 2012 09:25 AM
I also have a composite Sun in 12th house with my Significant other. Infact, we have sun conjunct pluto in the 12th house composite chart. We both have sun in 12th house natally.In synastry my venus, mercury and pluto falls into his 12th house. His pluto falls into my 12th house.
I've heard some not-so-pleasant things about 12th house synastry and composite.
Here is what I got from cafeastrology website:
"Composite Sun in the 12th House. This position can bring challenges that most people find very difficult to deal with. In this relationship, many facets of your personalities that you would rather keep private may be revealed. Your relationship itself may be hidden from view or others may not know it exists at all. In fact, if they do know it exists, they are unlikely to understand what it is all about. This is an especially sensitive position of the Sun in the composite chart, and it calls for you to keep your eyes open. Many relationships with this position are unequal in power in some manner, where one person does more sacrificing to be with the other, where there is a significant age difference, where there is a secret affair, for example. This can take its toll over the long term. Dealing with imbalances is an inescapable part of your relationship, and it's best to use strategies to do so without inflicting or absorbing guilt."
I do feel there are many obstacles in the relationship, its a matter of whether or not the people involved can deal with it maturely or not and whether they are able to accept differences.
But I have heard some very nice relationship stories that do have 12th house in synastry/composite...but it was very intense, and it requires A LOT of soul searching and revealing/dealing with not-so-nice things about yourself/other person.