Boyfriend problems

Shelly • Hi im Shelly (18) and i love music working out and helping others thru life. I overcame cutting. I still struggle occasionally with depression but i just stop looking at myself&tryhelp others♡
I need help and advice. I have been with my boyfriend for about 2 years and these past months he has lied to me ridiculously and now i go back and forth about finding some stuff out that went on between him and a minor. And of course he's not here so i cant talk to him. I need help because im going nuts. Someone advise me. Im willing to give more detail