Do you believe, once a cheater always a cheater?

CeciliaMaria
My boyfriend gave me the password to his Snapchat, and told me he wanted me to find out everything he did to me. I found out my boyfriend went to meet up with a girl in the beginning of our relationship. He swears he never did anything with her, and thought about me the whole time. He said he was scared I would find out, and he was going to lose me. He said after that he never went to do anything like that again with anyone, but admitted he flirted with other girls for 9 months out of our 10 month relationship. (Which I couldn’t even count it was that many girls, some I see in my circle of friends that I introduced him to) He made me look so stupid this entire time. He promises me that he won’t do any of it again to me, but what are the chances that he has actually changed?
Do you believe, once a cheater always a cheater?
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