boyfriend trades nudes with another girl.

my and my boyfriend have been together for almost a year and a half. i’m 16 and he’s 15. on new years some girl texted me screenshots of a conversation she was having with my boyfriend about trading pics. long story short he sent pictures to her. i made a deal with him and decided to stay with him because i love him so much. i told him that we would be having no sexual contact with each other until i feel like i’m ready to completely forgive him. am i making the right choice by giving him another chance? what would you do in my situation?