On a daily basis, I do believe that we strive to be better people irrespective of our genders. There are so many inherent flaws in man that sometimes, we doubt if our efforts are not futile, but we try all the same. I think, man is generally born with that tendency to be greedy in a relationship and the females, on the other hand, more controlled in handling same. This, in no way justifies the numerous infidelities associated with the men folk because more enlightenment and our religious upbringing has taught us that civility and singularity in relationship should be the ideal path to a successful relationship and marriage.
Now, the above mentioned context is also as it should be in an ideal world, but is not always the case. The earlier we come to terms with this sad and bitter reality, the better, especially for the women folk. Guys, this is really not a write up to excuse some of our crazy behaviors, but my intention is to throw some light on the fact that we are more often than not, prone to cheating. Nature shows this all the time. We see a male dog, a cock, a male goat, a lion etc flirting naturally with so many females and the reverse is usually not true with their female counterparts. Even without the sophisticated educations we humans have, the females in the animal kingdom still resist the urges to flirt around. That is just nature trying to teach us some thing. What separates us from them, though, is our high level of education that teaches you that we live life better and to the fullest, when you stick with a single partner.
Even with all that education and religious background, of course I hate to really break the cold ice and state the obvious right here, you should still prepare for the worse behavior with your partner because he could still cheat on you. Yes, continue to trust him, show him love and be on the proactive side by doing all it takes to keep him satisfied and quite literally, tamed. It wouldn't always be easy, but it is worth the try. Pray a lot if you are religious, for the God to see you through the darkest hours of your relationship and strengthen your patience because your overall attitude would ultimately encourage him to or dissuade him from doing the unthinkable. A mindset like this, believe it or not, would make your relationship last a lot longer.