Im so sorry I know its so hard. When my t dumped me out of nowhere, it was such a shock,and i mourned her deeply for several years. I thought about her all the tme. I thought it was going to drive me crazy.
Hang in there. It will get better. It took me about seven years to truly get over it, but that was because of several deep-seated reasons. I bet it wont take you that long.
So sorry.