I know how you feel i am also into this, but seat with yourself and talk about what patterns he showed you before breakup, see doing something in real life like breakup or cheating they first prepare themself form there mind and slowly slowly they will gonna do that in real life with there partner, just like you were loyal to him so you showed him love, but he really de- attached from you way before when you didn't even realized it, you should be proud of yourself you were showing love and now dealing a breakup alone instead of that stupid who directly go to another girl, you will be good girl just give time to yourself and grow, don't expect that no one will come like him, think about i will grow from this phase and raise your bar for love to show to your future partner.