There's a difference between goodbye and letting go. Goodbye is "I'll see you again when I'm ready to hold you're hand and when you're ready to hold mine". Letting go is "I'll miss your hand. I realized it's not mine to hold and I will never hold it again".

I realized that I only put on my best smile when I think of you.

When he breaks up with you, it's because he finally realized that he wasn't good enough for you and that he's letting you go free to find the one.

I could not tell you if I loved you the first moment I saw you, or if it was the second or third or fourth. But I remember the first moment I looked at you walking toward me and realized that somehow the rest of the world seemed to vanish when I was with you.

I only realized how much I loved you the day you left me. Now I know I love you more than the first time I met you.