Help -_- How can i find the email i used with my CA account

lol funny story i was on my friends 1lt lol and i found out his info like bday and shit and i was on his pw and then i changed it and i was like try and get it back and well i asked him if he new the email he said yes so i pressed Pass word reset ( FAIL INO LOL) then he couldnt remeber what it was -_- So is there a way to find out the Email used on the account I will love u and gift u 5 k nx if i can

Please help me And no dont try and scamm me saying give me the info and i will get the email for u -_-