Hi samanthagrace-
I'm sorry you were deep in that, it is very painful and confusing, and unfortunately it's not unique around here, but the good news is we've all been there and we understand.
"He has you believing that you don't even have the right to express how you feel." Kudos to your sister for speaking the truth, and you for reaching out to her, hearing that might have been a wake up call for you, and she had the benefit of looking from the outside in, like TheSinister's reference to the frog and the slowly heated water, we can get unknowingly deep in it before realizing we're with someone with a personality disorder with their own agenda and focus.
Most troubling is that it was normal for me to be disrespected, invalidated, and accused of being abusive whenever I tried to get any of my own needs met.
As you might have learned in your psychology courses, borderlines need to be in control of the emotional distance in the relationship because it's a way to manage the opposing fears of abandonment and engulfment: trash you self-esteem and cause you to doubt yourself and you won't have the courage to leave, limit how close you can get emotionally, texting-only is good for that, and he won't feel engulfed. That's not necessarily conscious and/or malicious, it's just a way of dealing with emotions he can't deal with otherwise, and it works.
This was my only real long-term relationship so I'd love to know that there are better things ahead.
Oh yes, much better, which begs the question what is a healthy relationship? Pretty much take your list and flip them around and that would be it, a relationship based upon mutual trust, mutual respect, open, honest communication, mutual validation, mutual compassion, and no abuse whatsoever. But first, as you move forward with your detachment, grieve the loss of the relationship and all you made it mean, process all of the emotions, and move towards your bright future, have you begun to look at why you got so deep? What beliefs you have about yourself and relationships, what you made things mean? Sure, we were blindsided by mental illness, when my relationship flipped from idealization to devaluation, as borderline relationships do, I was confused, anxious, 'walking on eggshells' to coin an oft-used term, scampering around trying to 'fix' everything, and if that's true for you, what predisposed us to that?  :)igging there, and coming up with answers and good self-knowledge, can be the gift of the relationship, a depth of introspection we may not have gotten to without that motivation of the pain, on the way to our bright future.