Complex sentence: Later seasons depict the relationship between Cory and Shawn as being so intimate that it causes Topanga to be jealous, and several innuendos are made referencing the subconscious homoerotic nature of their friendship.
Split into simpler sentences: Later seasons depict the relationship between Cory and Shawn as being so intimate that Topanga is jealous of it. Several innuendos are made as to the subconscious homoerotic nature of their friendship.