Realise this is bad form & I'll be called a hater or whatever but having read this and the previous bonkers thread I feel drawn to join in the madness.
Waving, forget about your ex. Delete/block/avoid/whatever. You've spent most of this & the previous thread trying to convince yourself what a twat he is, saying he's a narcissist (which apparently is the case with any person who's had the nerve to dump someone on MN) you didn't really like him at the start, he's a bad kisser, he hasn't achieved anything within his life, is a sad old man with a young girlfriend etc etc
And in spite of all this, you'd clearly take him back. Give your head a wobble, forget him and move on, he is not worth another second of your thoughts.
This is the problem with 'supportive' forums. 20 years ago if you got dumped after a short relationship (& that's all it was) you'd lick your wounds for a bit, have a moan & get sympathy from your friends for a few weeks, and then move on. You might still feel down about it, but you'd have the good sense to keep it to yourself, not keep going on about it you to your friends as they'd tell you to stop boring them about it, stop feeling sorry for yourself, get some perspective & move on. You'd then start the healing process.
However these days you can jump on forums that allow you to continually over analyse every single detail with likeminded souls who are also wallowing over non relationships, & no one moves on. It's constantly picking at a scab & it stops the healing process. How is this helping?
So stop wallowing and look forward.
Focus on you & your kids first. This should be your priority.
Focus on your job - if your performance has dipped because you're heartbroken over splitting up with a short term boyfriend, your perspective is all messed up. You were together 5 mins (& by all accounts, you were the rebound), you didn't have kids, didn't live together, put this into perspective.
Stop dating. You've said repeatedly you are going to stop until you sort yourself out, yet you appear to be on a date every other night. Hide your profile on all your dating accounts until you're properly ready to start dating again. And that's going to take time.
Stop drinking. It makes you miserable and is not helping with your mental health, your sleep or your job.
Stop jogging past his house. This is not about letting him win, change your route until your infatuation passes.
Get therapy/counselling or whatever, but don't talk about getting it, go and do it.
Do not contact him again.