No all men do not cheat. I have my freedom to go out, hang with my friends and go to sports bars when ever I like. I still can come and go and so can she. I have been faithful, for 31 years.
Another thing we both did was trust each other. I couldn't be with her all day and all the time. She couldn't be with me. I wasn't jealous when guys got in her face, and she wasn't that jealous of me.. it took her longer to work on hers but she got better.
My attitude was if she wanted to leave and be with someone else. There was nothing I could do about it. So she had her freedom, and never took it. Me either.
When I met my girlfriend I was 16 going on 17 ( 1974 ) 31 years ago, my wife now. I had several girl friends, she knew. She didn't like it, my attitude was one for everyday of the week. I played it that way. So I didn't grow up thinking I would be faithful or taught that by any role model. I was out like many men.
This is how I changed. This might work if done right.
Challenge a man! That is what my wife did. She asked a simple question and I was going to prove her wrong. She asked me.
You couldn't be with only one woman at a time could you? My answer was " Yes! "
You may have to word it different, but the concept is what matters. Challenge him. Always challenge.
I started to really care about her feeling and didn't want anyone in her face, or on her phone. Talking about he did, stuff. So with her challenge it has been a long and painless road.
It worked in my case, I was challenged. I didn't know it then. I know now what made me try on the faithful pants and say no when love was in my face, and was offered.