Sure, we know that love is all about trust and so on, but that doesn't mean you bare heart and soul to your significant other. Know when it's best to keep mum.
Pass
Did your husband's best friend make a pass at you If it was harmless, happened at a drunken, weak moment, let it ride. It's possible he finds you attractive and didn't know what he was talking about when inebriated. If you tell your husband, you will probably break up a deep friendship that has lasted years, and no one will be any happier. Remember though, don't let the friend get away with such behaviour more than once. If he ever gets nasty or makes you uncomfortable, it's time to spill the beans - no matter how deep and old their friendship. You're far more important. In addition, the very fact that he deliberately makes a pass at you again and again shows that he doesn't respect your husband or their friendship.
However, if your wife's best friend made a pass at you, let your wife know. If you don't, your wife will be hurt beyond belief if she finds out. In addition, women don't make passes lightly even if tipsy, and such a woman is definitely no friend to your wife.
Devil's Advocate
Don't ever criticize each other's work at the office. Everyone goofs up once in a while, and if you feel your husband's boss was right, or your wife didn't deserve that promotion anyway, DON'T SAY IT. You're each other's support system. You're supposed to be on each other's side in this big, bad world. Let the others play Devil's advocate. If your spouse can't turn to you for support and to hear the words 'Aww, you're the best,' then where will he or she go Of course, this doesn't mean that you can't give advice. You can. Just be tactful about it.
Unfaithful
Were you ever unfaithful in a previous relationship Did you cheat on a past love? If the answer is yes, don't tell your spouse. You have nothing to gain by opening your mouth this time. Your spouse has to understand that if he or she ever cheats on you, it's over between the two of you and you won't hesitate to walk out. In your books, infidelity is equal to murder. It's shocking and horrifying, and something you will and can never accept. In fact, if a close friend of yours is cheating, don't tell your spouse. And if you are tempted to talk, make sure you mention that you think such actions are completely unforgivable, and you have half a mind of breaking off your friendship. After all, you don't associate with anyone who would do something like that! If you ever let your spouse know how you two-timed in a previous relationship, don't be surprised if your spouse thinks you have no right to get upset if he or she has an affair.
In-laws
His mother constantly interferes and doesn't treat you right Grumble, grouch and sulk about it, but avoid criticizing her too often to your husband. Although you may hate her guts, your husband is not going to pay much attention if criticizing is a habit. Keep your grouses to yourself and to your ten best friends! When you have a serious issue, he is likely to take you seriously if you don't grumble about how awful your in-laws are all the time.
Similarly, as a husband, if you respect your wife, show some respect to her parents. After all, chances are your wife's parents treat you a whole lot better than your parents treat her!