I wonder if Karen told Holmes about Warden later...
After they were well and away from Hawaii I wonder if she told Holmes who the 'other man' was. I'd LOVE to have seen the look on his face.
And to further it, she also tells him that Warden told her about Prewitt as well. And finishes by saying to him he deserved it all for being a pompous @$$ for putting boxing as a priority over soldiering.