DEAR ABBY: I had this friend that I met eight months ago at a local boxing gym here in Chicago. We got along extremely well and even hung out a couple of times. However, she left her job at the gym two months later and things started falling apart.

I started sending excessive messages on her social media, and she didn't like it. By the following month, she had enough. She told me I have an unhealthy attachment to her and we would go our separate ways. She blocked me from all social media, and she hasn't contacted me since.

Four months later, I am better, but she is still in my head. I really want to write her a nice and sincere letter and reconcile with her and have her be my friend again. I didn't know that I was doing something wrong.

I have tried reaching out to her multiple times recently via email, to no avail. In the meantime, one of her friends told me she has moved to Texas, which makes it even more heartbreaking. How can I show her I can be her friend again without exhibiting those same toxic behaviors? -- GUY WITH A WOUNDED HEART

DEAR GUY: You have already done enough. You have done so much, in fact, that the young woman felt she was being stalked. She has sent you clear signals that she's not interested in being friends -- or anything more -- with you. For your own sake, take the hint, leave her alone and, please, learn from this experience so you won't repeat it with someone else.