Dear _________,
You know who you are.
I'm not going to thank you for breaking my heart and making me feel like I wasn't enough. But I will thank you for teaching me so many lessons.
First off, I wouldn't have learned to put myself first if it wouldn't have been for you. You put yourself first, and made me feel like I had to do the same until you broke my heart and I realized I should've been putting myself first this whole time.
You made me learn that it's okay to be alone. Between you not texting me back or not having time to see me that weekend, I learned that I am fine on my own, and I can take care of myself. I don't need someone to hold my hand every step of the way.
I now know what it is I deserve. I deserve someone who wants to text me back, and sweep me off my feet and be with me whenever they can. I deserve someone who wants to call me theirs and show me off and make things official. I deserve to laugh and be happy with someone else, but also be able to be happy on my own. I deserve someone who will make me more than the "not-girlfriend-girlfriend" and actually introduce me as his "girlfriend" rather than pretending I don't exist.
You broke my heart, and it sucked at the time. At the time, it was the hardest thing I could've gone through. But now, I am so much stronger knowing what I deserve and what kind of person I deserve.
So I will never thank you for breaking my heart without even dating me. I will never thank you for treating me like a friend with benefits. I will never thank you for making me cry and feel like crap.
But I will thank you for letting me go, and showing me that you are not what I deserve. I appreciate the opportunity to grow and experience change.
Sincerely,
The girl you never dated