I disagree that the manipulation is not intentional - there have been instances where mine knew precisely what he was doing. Agree tho not to contact - they seem to feed off any attention even if it is initially negative
I have to disagree on this too.
Using my own ex as an example:
He specifically "targets" people he sees me talk to and have fun with, trying to rub shoulders and suddenly be their best buddy, randomly asking them questions about me, despite him NEVER having taken an interest in them before!
In my book, that isn't just coincidence, that is well thought out manipulation to gather info from them about me and my life.