I will never mind you asking what happens in an Oz book! In Tin Woodman, he gets asked if he ever went back to his girlfriend and then he feels all guilty. Because no, he didn't, even after getting a heart. So he discovers where his girlfriend from the first book lives and is determined to marry her...only to discover that she's already married and there is a twist about who she is married to, but it's this hilarious commentary on how misguided men are when they say, "I know what women want". And at the end Tin Woodman goes home with the Scarecrow and settles down for good. Basically, it's right up front but very gentle that the Tin Woodman and the Scarecrow are a gay couple. As a college student I finally noticed this and then understood why the novel was necessary. It definitively lays to rest the Tin Woodman's ambiguous heterosexual past and rules that he is, in fact, going to be with the Scarecrow forever. Oh, and trying to marry someone out of obligation is bad, kids. Don't do that.