Looking for advice please .
been split up with my ex for 15 months. he was constantly cheating on me although i didn't know it for the 7 years we were together.
He moved to a flat nearby- I don't see him often but when I do I forget about the hurt he caused me and miss him.
He moved onto another relationship quite quickly ... i think there may have been seeing each other before we split.
How do I stop missing him and obsessing over him?
Thanks