Should I take a chance ?

There was this guy I talked to last year for a long time and he cheated on me with one of my friends and I was heartbroken . I really liked him and he was the sweetest most funniest guy I met at the time. Months have passed and he texted me again and we started texting and talking on the phone again and he seems genuinely sorry . Should I take a chance again or should I just forget it and move on .