Attraction

It's literally been a year since me and my ex broke up. We had sex 3 times in the year we were together(I know that's really low amount). But now all I've ever been able to think about is his cock. I've talked to loads of other guys and seen loads of other dicks. Watch porn and everything. But the one thing that gets me the most turned on is him and his huge penis. How do I move on? (There's literally no way for us to hook up)
Also, comment on which things I should try to get horny...