In a past life, this person had complete control and power over you, and shadows of that old struggle are felt again in this lifetime. You could feel threads of that past-life dynamic, too, in a heavy sense of familiarity that settles in early on. Were you lovers in a past life?
Because your relationship was much more like that of jailer and prisoner. Your partner kept you down, using emotional or even physical force to control your every movement. There's no reason why it should be nearly so intense in this lifetime but you do feel the power of the dynamic, at least subtly. When you gets frustrated with your lover, you could feel scared to voice your irritation -- and that could be an old, subconscious memory of your former life together and your old, destructive relationship. Or your sex life could take on a dynamic of domination, which isn't necessarily fun for either of you; that, too, would be a holdover from that past life. If you want things to work out smoothly in this one, you're going to have to try in a conscious way to be who you are, fully and completely, despite any feelings of fear or restriction you might feel; and to do, say and be whoever and whatever you want. It's the only way you can break this old cycle of control and domination, short of refusing to be involved again.