I'd say just invite your husband, you could even do a double date! The only time I've been alone with a guy friend in my 3 years of marriage was just while my sister was on her way to come hang out as well. I honestly think hanging out with another guy alone when your married can cause problems, unless the guy is gay. Married men shouldn't be asking married women other than their wives out to lunch alone. I know you think it's innocent and just friendly, but don't you think your husband's feelings are more important than you being alone with another man? Wouldn't it be more fun if your spouses were there anyways?