First I want to say that in general, couples wait too long to seek help: wounds accumulate and make the pain higher and the healing longer.
I am a cognitive therapist, and I tend to look at how someone perceives situations more than what the partner does. Difficulties often arise from misunderstanding of intentions, and/or unspoken assumptions. I see my role as a therapist as helping the partners becoming aware of these and changing them to views that work better for tem.
I am also an executive coach, and I do not hesitate to use a coaching approach in couple therapy.