I need advice and tips?

I broke up with my ex before 2 months and it was really hard for me actually to feel myself so what i know he was dating a gitl after our break up and yesterday he texted me saying he can't live without me
Even as friends I really can't forget the way he dumped me just because i was busy with my medication
So i know he was bored that's why he texted me
I really need to move on but I don't know how so please tell me what should I start to.. move on from this exotic feeling
I need advice and tips?
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