Is"wanting what you can't have" true? my gf of 3 years left me.?

Man send her that letter, and when she receives and read that letter, she will cry and miss you. But when she try to call you, please don't pick up. Try not to talk to her for 3-7 days. She will go nuts and start realizing she messed up. Trust me man, girls are like that. Please don't be a puss and talk to her when she reads the letter and want to chat with you.