You said; "Honestly, I'm not quite comfortable describing nitty gritty details of the rape. Basically, I still feel like it's somewhat my fault for allowing it to happen, but I didn't want to have sex. Not wanting to have sex is apparently the definition of "non-consenting" but, I feel like I could have said "no" and I could have stopped it from happening, but I didn't."
Hun, there's no need to describe what happened to you. You shouldn't feel you have to do that. None of what happened to you was in any way your fault. I believe you and hear you. He manipulated you, and put you in a position where you couldn't even assert yourself enough to say no. You didn't want it to happen to you, so it was rape. You were powerless.
I've also heard of the Stockholm syndrome. The mixed emotions that you feel are common in that.
The first step in reclaiming your power is to nurture yourself, and look after yourself emotionally. Take things one step at a time, and realise that you are in no way to blame and that you do not need to justify yourself to anyone.