So my boyfriend of 5 tears

So my boyfriend of 5 years decided to break up with me. I took the whole week to pack up my things. By the time sunday came I was out the door. I won't lie, I took me a min to pull myself together as I looked at our appartment one last time. I am currently staying by my sister's house and I've been in the room since I got here. I can't sleep, I can't eat... all I can think about is him. I did nothing wrong in the relationship and I don't understand why he choose to break up us apart. I did nothing but take care of him, feed him, making sure that he's ok, give him sex... and all I get is a break up. It has been a few days since I moved in with my sister and I get to find out that he took down our pictures on his instagram. It broke me down, I endure up crying and calling my sister on the phone to come because I was all in her appartment. Sigh.... what did I do to deserve such punishment.