Oh @babygirl88 I really feel for you reading this as your shock jumps out from your words and takes me right back to when this happened to me.
You’re having a normal reaction, this man has been in your life for years and it’s a betrayal so your mind is trying to align everything with the new information.
In the next few days, treat yourself for the shocked reaction so be really easy on yourself- remember to keep eating and hydrated.
Try and do some nice stuff like a bath with your favourite smellies, walk in nature, try to give you mind a rest every day from thinking about it, write your thoughts down before bed, ring a trusted friend or family member and tell them everything!
Ring a friend and talk about all the annoying things about him and laugh about him! Op he sounds awful and like a massive man baby!! You’re young, he’s given you an easy way out!
I know it’s easy for me to say but you will be ok. It hurts like hell and that’s normal and shows that you’re decent and human and that you loved him. Turn it around and be thankful to be you; loyal loving rather than him; cheating and pathetic.
It will take a while to feel okay but you will.