This behavior gave way to brief periods of chasing, in which Boomie would chase her around the yard or around the living room. Sometimes, it would end in humping (Boomie). Almost always it would end with snapping (Marley). But after a couple of weeks, Marley decided that Boomie wasn't so bad. The barking arguments stopped, and soon afterwards, so did the snapping. Marley and Boomie had become friends. The humping continued, but with diminishing strength over the years as Boomer got older and his hips got worse. (but he was still humping occasionally with only one hind leg!)
First picture of them together, January 2005
Most of the time, they just laid near each other. Sometimes when one dog had a tennis ball, the other one would creep closer and try to get it. This was especially fun to watch when Boomie was trying to get the ball out of Marley's mouth.
Here is a little video of Boomie and Marley playing. This was in May of 2009, a year after Boomie's amputation.
Today is the 2 year anniversary of Boomer's passing. I would like to imagine that somewhere out there in the universe, Marley's spirit and Boomie's have found each other again.