I'm sorry if this makes little sense and if the wording is utter shit but bare with me because I hope one of you can relate....

Do any of you feel like people romanticize you? I feel like since we're all basically identity-less and we're extra sensitive to our surroundings we leech personalities off of whatever person or people we are around. We mirror back their personalities in hopes they like us. 
For me this is where things sometimes get hairy. Often times since I try to fill a particular mold, people feel like I'm "the one." They've built me up, with my help, to be their perfect person. And despite my warnings that I'm emotionally unstable and that I will never wake up the same person tomorrow that I am today they assure me things will be okay. But they never are. Since I fit so tightly into their mold, removing me from the mold is one of the hardest things. I watch them go from without a doubt loving me - to suddenly hating everything I do. They go from believing they know me so well to seeing me as a stranger. I've never had strong, lasting feelings for someone so it's not hard for me. Other than the fact while one half is glad my burden is gone - the other half is left devastated. It feels like I'm being abandoned and it hurts so deeply. But, it's a never ending cycle. I'm okay with being alone.  

Do any of you experience this? Have any of you have solutions? I'm just very confused and lost and searching for answers. For those of you with BPD in a relationship, are your feelings always constant for your SO? If not, how do you and your SO deal with it? 

Sorry, I know this just rambling and it doesn't make much sense. But, like I said I'm confused and hurt at the moment and just in need of some answers or good news or something.