No one has made anyone sin. The devil cannot make you sin. Sin is an act of the will. A matter of choice. A given decision to ignore the word of the Lord.
Sin is ultimately a byproduct of a love that has grown cold.
A lack of trust. If we confess our sins, He is faithful and just to forgive our sins and to cleanse us from all unrigteousness. Peter had denied Christ. Peter had failed Christ and dissappointed himself. Peter was disillusioned and returned back to his former trade.