Dear self,
Cheer up a bit. Dont be consumed by the pain that guy gave you. You have your own life to live, ur own battle to face. Don't be scared to live life without him. I know it hurts a lot with all those memories you have with him, but be glad that he was able to share those memories with you.
I know you are hurt so much that you beat yourself up to sleep, cry it all out, let it go, grieve for it will soon come to pass too.
I know it hurt so much to act so cool when he message you, trying to fake that you are okay, giving him advices for his new girl. im proud of you. Coz you only think about his happiness despite your shattered heart. Dont worry, you will find someone who will treat you better, someone who wont talk down on you, someone who will love you and accept the whole you.
Get lost, travel, find your soul again in this big world, then come back refreshed. Smile, laugh and live life to the fullest.
Never give up just because someone gave up on you. You are worth more than anything else, and you deserve to be happy too.