If someone cheats even after you as a man have done all that, it's because something isn't being meet that they didn't communicate clearly enough to you. That's on her ((the same goes for you, if you don't communicate to her she ain't gonna to fulfil shit)) then you either talk it out or walk the fuck away.

In many cases not all your needs can't be met by one person. Not talking about just sexual.

You can say "It's your job as a man to..." No! it's not your job to read her mind, it's not your job to guess. If she's got her shit together then she should communicate to you like a mature adult. Yes you can show her how YOU want to communicate in a relationship with her, that's a bit give and take AND you need to know how to actually listen and not simply hear.