In this ValentinesDayEpisode, Bart reunites with Mary (Cletus the Slack-Jawed Yokel's daughter who moved to New York and writes for ''Saturday Night Live''), but their relationship drifts apart and Bart must win back Mary or lose her forever.
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!!"Love is a Many-Splintered Thing" contains examples of:

* AbusiveParents: ''Marge'', of all people, comes off as this when [[IHaveNoSon she throws Bart out of the house]] just because he agrees with Homer that LoveHurts. And worse, Homer and Bart have nowhere to go.
* BaitAndSwitch: When Bart and Homer are expelled from home, two suitcases are thrown as well. The smallest has a Krusty the Klown's face and the other doesn't have any sign to suggest it to belong to a kid. The smallest belongs to Homer.
* BerserkButton: Don't disagree with Marge, otherwise you're left to die on the streets, even if you're her son.
* DisproportionateRetribution: Marge not only kicks Homer out, but ''Bart'' as well, all because of a frustrated response about women never saying what they mean (shortly after Mary broke up with him over the phone).
* DownerEnding: While Homer wins Marge back after going through leaps and bounds (once again), Mary dumps Bart and is now dating the son of a Brazilian producer.
* HopeSpot: The episode ends with her relationship status updating from 'married' to 'single.'
* IHaveNoSon: Marge disowns Bart because he sided with his father over their argument about love.
* TheUnfavourite: Kicking him out just because of his bitterness towards Mary makes Bart this to Marge.

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