With such constant talk of men betraying their girlfriends and wives are you afraid your man might cheat on you? Is the thought gnawing away at you and you want to do everything you can to keep it from happening? Are you always clinging to him in order to make sure he doesn't do anything wrong? Our gut reaction is to automatically hang onto him for dear life. So long as he's at our side he can't do anything that will hurt us. But this isn't a reasonable way of dealing with the problem.
Instead of spending every waking moment at his side, concentrate on ensuring that he's happy with you, and that means in virtually every aspect of your relationship.
Sex is often a problem that arises soon enough in a relationship and it's important you understand his needs. If you don't think it's important enough to bother taking the time to tend to him, someone else might.
Feeling like a man is also important to him. If you've begun nagging him for an assortment of minor offenses and you're constantly telling him that he's doing everything wrong, he could start to feel like he can only do wrong.
Just as you want to be complimented and appreciated, so does he. Let slide some of the silly, trivial stuff and praise him for the great things he does. If you don't step up and make him feel good about the man he is, someone else might.
Also be willing to yield a bit more and give him enough control in the relationship and in his life as well. If you've put him on a tight leash that barely allows for any fun, he'll be itching to get free. Be as fun and exciting as when he first fell in love with you and show him that life is fun or someone else might.