I (20F) met my FP (20M) just over a year ago. We almost immediately became codependent; since the day we met (where we decided we were soulmates six hours after meeting), there hasn’t been a day since where we haven’t seen each other, and we moved in together after knowing each other for four months. 
We’re both gay, so there’s no obviously romantic aspects to our relationship, but we’re incredibly touchy (he hates physical contact with anyone else). Neither of us wanted to get married to a romantic partner in the future “for real”, so we married each other, because we agreed that we can’t imagine life without each other. We’re also planning to move out of the US for grad school together (which is in a few years) and spend the rest of our lives together. 
As a result, he’s definitely my FP. My moods change to match his, I plan out my day so I can spend as much time with him as possible, and my thoughts tend to revolve completely around him, in some way or another. No one has ever made me smile as much, cared about me, or impacted my life as much as he has. He’s truly “home” to me. 
Does anyone else experience this, have a similar situation, or can offer advice? I clearly can’t spend time out of contact with him due to us living together, but I feel as though I need to detach from him a lot in order to make progress in healing from BPD. I don’t know what to do.