My ex (age 31) and I were together for 5+ years and he cheated more than once. He says it was mever emotional which still doesn't ease the pain. We've been apart going on 2 years and he says he wants to get back together. I am very skeptical because of his past cheating. Also, when he has dated during this time apart, we have still slept together which confuses me. I know I shouldn't have continued to sleep with hin. He says that he can change and he wants to change... can I believe him or once a cheater always a cheater?