What should i do?my friend won't delete my goofy picture on his phone?

My office buddies and I were dining out and suddenly he took a stolen picture of me. He showed me my photo and for me I looked horrible or goofy/dummy on that pic. I feel so embarassed coz he saved it right away in front of me.I told him to please delete it now. But he won't listen and just said "yeah don't worry i will". But i felt so bad it's still there so i kept begging me please..please...please like almost 20-30 times in front of the group. I felt like a brat or a kid begging him to but he just won't listen. He just said he have to dig into the folders to do that. I felt like a fool coz some of my friends sneered in jest at the photo like in disgust or something.Their reaction made me so uncomfortable and made me feel so ugly.Some of my buddies also tried to ask him to delete it. But still he won't do it. I felt it was useless to go on. So i just had to walk away in embarassment. I felt like I had karma because i was also laughing at someone's photo awhile ago.I felt what i did seem to come at me so suddenly. I felt God might be teaching me a lesson or something. I tried hard not to be silly anymore. But i feel i am so immature. Now with my walking out, i felt i made things worse coz i feel like a loser or a brat. Did i do the right thing? Why won't my friend delete my photo. We are only friends nothing else. How am i going to overcome this embarassment? I just want to forget what happened but i can't. Who's fault is it? i wish we can still be good friends but i don't know how i am going to face them at work when i still have a feeling i was being made fun of. I am losing my self-esteem.Please help me.