How to get over break up after 3 years?

I am person who emotionally attaches really fast,and just few days before brake up he was talking about moving in,how much he loves me.

Had one fight for two days,nothing like big,just arguing and stupid things was said,then he says he want to be single,do what he wants,he says he loves me but that’s not enough, the fight made him realise he wants to be alone.

And the way he left,seemed that that he is not hurting at all​:cold_sweat::cold_sweat: