You can almost feel the sarcasm here:

uhhh yeah... he totally wouldn't have gone if he knew i was gonna go

exactly because you know you broke his heart and treated him pretty badly and ignored him forever before breaking up with him under false pretenses!

hahhahha and yes, i admit it.. i totally did that..

hahahaha I know how could you?! no wonder he doesn't like to come around lol

Girls will be girls