What Would You Do?

Anyone else remember the Nickelodeon game show? Completely besides the point, just curious.

So, what would you do? Hypothetical (or not so) situation:

There is someone in your life. You are generally bugged at this person all of the time anyway because you do not agree with just about anything they say or do, especially because the two often collide in a furious hypocritical disaster. Now, say this person says something so ridiculously insensitive, selfish, and just downright rude, that you are left in personal turmoil, not only because of how this comment relates to you, but how it so much more strongly would affect another specific person in your life, who was also present at the time of said comment. Now, what do you do? If you say anything to the offender, it would bring many things, people, and situations into a disastrous storm of hurt feelings, unrighteous indignation, and cause multiple rifts in a certain social and possibly professional framework. If you say nothing, it will bother you for the rest of your life. If you apologize to the offended, on the basis that even though you are at no fault you want them to know that if you could undo what was done you would, then you may not have really accomplished anything, and would feel even worse about the fact that you said nothing to the offender. You could write an email explaining to the offender exactly how and why what transpired was inappropriate and requires a direct apology, but then we're right back to square one. Especially because you would inevitably feel compelled to forward this email to the offended to let them know the action you are taking and your feelings on the matter.

Between a rock and a hard place. HELP!. . . i mean, uh. . . this is totally hypothetical. . .