<human>: Ex broke up with me 3 months ago.  We'd dated for 3 years and she constantly talked about marriage and the future, so I didnt really see it coming. She ended it because she was unsure if it would work long term (ironically). 

Fast forward- I was upset/grieving for a month and a half.  Since then I have gone on quite a few dates with some nice girls.  The dates have been fun and Im still dating one regularly.

Problem:  When Im alone I sometimes still get sad and miss the ex even though I really like the new girls, and their personalities are more like mine. Does anyone have good strategies for forgetting about Ex's, or tips that go them through something similar.

I have a very supportive friend network, and I am very physically active (gym, sports), but I still find myself gettign sad when Im alone once in a while.

Condense the text into a few key points
<bot>: Dumped by long term GF, still a bit sad sometimes.  I want strategies or tips for forgetting about the ex so i can focus on new things. What worked for you?