I was actually kind of disappointed to see Gai and Kakashi without a match...It kind of did seem as though they were married in the last chapter XD. Here are who I would have thought they would have been matched/married to.
Kakashi's GF. After her boyfriend, the Chuunin exams proctor, died, Kakashi tried to console her...he was practicing all the moves he picked up from Jiraiya's ecchi novels.
Gai's GF. This one is a bit messed up lol...but "the Green Beast" does look like the type to sweep a widow off her feet. Springtime of Youth muthaf*ckas!!!