Masturbation thoughts

Okay okay okay so I recently got dumped... the guy I was with I loved dearly, and we used to sext and musturbate when we were apart... still didn’t have sex because we lived so far away from each other... I need help masturbating without him popping into my head? I have moved on during the day but when I masturbate it feels weird without him and he comes into my head an ruins the mood..... help...?