If it's just friends, seriously, if it is, then run your idea by your husband. That way you will know. Some people will tell you it's wrong all together, others will say it's okay if you have lunch with your male friend b/c your spouse should trust you.....but I am always a firm believer that when you have these types of issues....the best choice is to be upfront with your husband...there's your answer. And if you feel you can't be upfront with your spouse b/c you fear "they would get pissed etc, and blow it out of proportion".....then I question your logic b/c if there is no romantic attachment then no reason to be a secret.