Try a truce today. For one reason or another, a schism between a person at work or in your social circle is making your life difficult. Hints and avoidance haven't work, so now it's time to step it up a notch. The direct approach is the best approach. Arrange a private tete-a-tete, and hash it out. Give this person the opportunity to air their grievances with you. Listen quietly: a data debate will only exacerbate the issue. Now, agree to keep things light and polite for the time being.