Jersey Girl

I'm the USC and 20 years older than my Canadian husband. It has crossed my mind that it may look like I'm being played for a greencard. On the other hand, he's my fourth husband, so perhaps I should be more worried about being perceived as a polygamist.
In the end, each story is unique. If the relationship is genuine, and you have all the proper documents, you shouldn't worry. It may be that in some cultures a younger man would not want to marry someone older. But as far as I know, Consulate officials judge cases based on U.S. immigration procedures and not local customs.

There are two betrayals here: using other women for sexual stimuli, and then continuing to do it after you've told him how you feel. This is not simply a harmless guy thing, in my opinion, but a sexual addiction you may not have known about before you married.
The immigration process is a red herring. Don't let it confuse the issue. If you feel he's not going to be the long-term partner you signed on for, then dump him before he hurts you even more. If that seems too drastic, then suggest you both go for counselling. In the end, he has to make a choice about the female he wants in his life: his wife or the porn girl on the monitor.
You are not powerless. You've always been in control of your destiny.