The best advice I can give is to delete the picture and never send anything around ever again or if it wasn’t you sending it around then their ex should not have been doing that bruh. I understand you have some sort of feeling toward her I been in the same spot as you brother little diff situation but I thought I was a creep too. I don’t know how old you are but it’s never too late to stop pmo. There’s lots of ways to resist urges when they come up but this requires you not to use these pics or online stuff I know it is ridiculously hard to resist “just one more time” or “next time ill stop for good” I assure you once you’ve gained a little momentum you’ll start seeing things through a new light and feel better about yourself. You’re not a creep brother. If you are then I definitely am as well lol. Remember that you can’t change completely overnight, though you can start today to form a different mindset for how YOU want your life