it can be difficult but you guys broke up. You can't expect anything from him now. This situation is just hurting your ego where you think he has moved on with another girl in just 2 days. See people have there own ability to deal with situations...this might be his way of dealing with a breakup. You need to focus on yourself, you need to let that person out of your life. In this situation you should grow from what you were to really something you consider amazing.
heal urself and forget abt him. u nvr know his mental state. attend to urself. coz thats all what u can do and thats all what matters.
if he has already moved on, then he was never into you. be grateful that you dodged a bullet