Lizz- I have to say it is so easy to do when you allow it to. I am coming out of that place where I feel betrayed almost! It is so hard to sort out feelings when the connection feels strong.
Real Faction- So many can relate to what you are going through. It is easy to allow someone to inspire you, but you really should consider cutting that cord. All that you have created came from YOU! You may have a muse or inspiration from another person but it was you. It is still too close. While I wish I could say something that will make it better.. I can't. I can tell you that many artists also convey that in their art, and many can identify with it.
People can be hurtful even if it is not what was intended. They also have a path they must be true to and it unfortunately does not always work out how the other person would like. I hope you find a calm and gain understanding about yourself and where you would like to be.
I guess I resonate so strongly that I feel I must repeat myself. You need some time to do something for you.
Look to the light and choose one thing you are grateful for today.
Being here at that time in my life was huge for me so I hope it helps you plus some.