I'm not sure if it's the same because I don't have OCD, but I am reassurance seeking with my therapist. And she actually encourages it, to test reality. It has mostly gotten better over time, like I'm usually no longer afraid of her leaving me. I still ask if she's mad or if we're okay. I'm also learning to ask for what I need (I need care, I need help) instead of asking if she cares or accusing her of not caring. It takes time to work through our issues, reassurance seeking as well.