Which of you is on the inside of the wheel, and which of you is on the outside?
I don't know synastry very well, so don't quote me on this--but it looks to me like you have some strong chemistry: lots of conjunctions between your personal planets and his and your ACs near each other's DCs. However, the quality of a relationship isn't revealed by a synastry chart. Synastry only shows potential. Whether and how that potential manifests depends on how each person is responding to their own birth charts, and to each other, and on where they are in life and their personal growth.
How you describe your marriage says a lot more. If this were a happy and healthy marriage, it would never occur to you to associate it with Stockholm syndrome. Someone you have good chemistry with can also be an abuser. The title of this thread says it all.
Do you often think you're lucky he loves you because you really don't deserve it, or something along those lines? Does he tell you something along those lines? That kind of thinking is very common in abusive relationships.