Do u think Jon ever cheated on his wife...?

Since there's nothing else what to talk about right now... Let's say, there is infidelity with thought, there are infidelity dreams, there are good friends, there is a lot of crazy fans, there are stewardesses, there are singers, there are prostitutes, there are VERY private prostitutes, there is phone, there is webcam, there are e-mails, there are magazines. Also, he was an actor and kissed a lot of women, reporters, singers, AND fans!
So I'd say yes.
However, he said this in 2007: "I've not been a saint. I've had my lapses. / I've been in one of the biggest rock bands in the world for 25 years, and I'm not a saint, and I have not been a saint. / I don't have a mistress on the side or another family across town. You're never going to read that story about me. I have no regard for that whole lifestyle."

As far as you mentioned she doesn't care for his rock star life. I think you make the mistake of taking "rock star life" as his work. Jon is a songwriter and singer and also head of a business in music. I haven't read anything about that she doesn't care about these things.