no i wont tell anything to him..itz like apnay paoon per aap kulhara maarna when u know in ur heart that u wont do anything like that again and u r guilty over that..plus Allah wants us “k hum doosron ki aibon per perdah dalain,na k sab ko btatay phirain”..when Allah wants us to do this for OTHERS then y can’t we forgive ourselves for own own mistakes when v know it is very much a chance that it will destroy our present..so therez nothing wrong in it that we hide our past mistakes…