CHEATERS

Me and my boyfriend have been together for a long time, he proposed to me last year but I called off the engagement because I found out he created a tinder account and was flirting with a girl who lived like 1000 miles away from him. He has done that 2 times already. He never kissed them nor had sex with them, but he flirts with them online. He always does anything to make my life more easy and supports me on everything LITERALLY!!! I just don't understand how can he make so many sacrifices for me but can't stop flirting with other woman 🤦‍♀️ has anyone been in this position? I want to marry him because he always has my back and I truly love him. But I don't want to be stupid and let this continue. has anyone ever married someone who used to be a cheater and actually changed?