question about facebook picture privacy?

[Maria A]

so i have i friend that i i know since we where about 14, and he likes me ever since we meet... he is always telling me how beautiful i look in the facebook pictures so i went to my photo privacy clicked on costumize and put his name on hide this from.... ( i also hide it from his brother but on accident)... he just got married to a really good friend of mine, and yesterday she send me a message saying she was in his facebook and wen to my profile but couldnt see my pics... now i feel bad for what i did!.. how can i undo what i did? what can i do so he can see my pictures again.. i already went 2 costumize privacy but it only says hide this from.. how can i see the people i hie and change it?