Yeah, I could see that couples therapy would help with this situation, but solo therapy for you or solo visits with the couples therapist might also be a good addition.

I am worried about the comment that you feel apathetic and neutral. I might be reading into it from my own experience, but for me personally that's often a sign of depression. I also have a constant struggle to act based on my own self interest rather than for the benefit of other people.

Whatever you do, it is great that you recognize that these feelings may be something you should think about and question.