I hope you can forgive me for doing this in a letter. It's hard for me to say the things that I need to, and I know that I might falter if I try to have this one-sided discussion with you face to face. We've been together for so long. You mean so much to me. I know that I wouldn't ever be able to survive without you. But, I think you've been dishonest with me. You made me think that the more time we spent together, the happier I would be. For a while, it was true. So many happy moments, joyful times and sweet, sweet morsels. Great memories. I love to introduce you to my friends. And you're always so willing to let me dress you up or change you around. I can get you all fixed up and take you places. People LOVE you! And then they love me for sharing you.
But over the last few weeks, especially, I've been feeling like you're taking over. You're so busy looking good and being great, that I've completely stopped taking care of myself. I've allowed you to take control. Now, I'm tired all the time. I'm sluggish. My self-esteem has been damaged. I've had to change my clothes, even. And you completely took my good friend Gym away from me. I haven't seen Gym in so long. We used to get together 5 or 6 times a week!
This week I was particularly not feeling well and I tried to spend time with you - expecting that you would make me feel better. But instead, I realized that it only made me feel worse. You aren't as sweet and lovely as you used to be.
I hope that we can still be friends. Obviously, we can't end our relationship entirely. Civility may be our only route from here. I hope you can forgive me and I know you won't miss me as much as I'll miss you, but I know you can find someone else. You really can be so irresistible.
Best of luck,