It's been about 4 months since I discovered that my "best friend" had been following a private blog I created to deal with my anxiety/depression. I started writing it last year under a pseudonym to express my feelings and doubts. I wrote about my life, my insecurities, my relationships and my struggles with my body-image. It was all very personal stuff that I since regret detailing, but I was under the naive assumption that it was completely anonymous.
Then 4 months ago, she let something slip that she couldn't have known about unless she read my blog. After pressing her, she came clean and began laughing and revealed she had not only been reading my blog but she'd been sending screenshots to all of her friends and they'd been laughing about it together. I was mortified. She then started getting angry at me for things I'd written about her (I never named her but she connected the dots). Basically we had a lot of arguments over the last year and I felt like she was constantly manipulating me (turns out I was right). But she just laughed at what I'd written and said that I was unhinged and that I was oversensitive.
She then took things one step further and confronted my boyfriend with very personal things I'd written involving him, including my doubts about marriage, my worries about settling, and my sex life troubles. She wanted to destroy me and justified it by saying I was a fake and user all along and that my boyfriend deserved better. She had never been happy about our relationship since the beginning and she was so smug about being "right all along".
It's been about 4 months since then. Obviously I have cut her out of my life, but it still haunts me daily. Me and my boyfriend have talked a lot and he's been very understanding and supportive, which has made me realise that I do love him and want to work on a future together.
But the last words my ex-friend said to me was that s will always know I'm a fake and they feel sorry for my partner because I'm clearly using him. She also threatened to send him more screenshots so I'm always on edge now.
I'm trying hard to put it all behind me and work on surrounding myself with happy people and making memories with my boyfriend, but I'm always thinking no matter what I do "I'm just a fake, she knows the truth, I should just put my boyfriend out of his misery". How do I stop these thoughts?