Tear Jerker / Mr. Young

• Mr. Detention: Though somewhat funny too, despite succeeding in keeping Slab from getting in trouble, Adam is again stuck on Detention duty at the end of the episode, this time with Derby and misses his final chance to walk home with Echo.
• Mr. Honest: Though again somewhat funny, Adam having to do all kinds of torturous things to himself to prevent accidentally telling Echo his feelings backfired when in the end, she finds out he was trying to avoid talking to her and says she'll stay away from him from now on.
• Mr. Big Brother: Adam utterly fails at every attempt to win over Echo in this episode (each one more humiliating than the last) and by the end, Echo's still with the guy he was big brother to while Adam's also nursing his many injuries received throughout the episode. Notable for being one of his more devastating failures throughout the show.
• Mr. Picture Day: Adam sadly looks on while Echo dances with her "senior prom" date Toby.
  • Echo getting rejected by Toby for having a chest hairier than his.
• Mr. College: When Derby's recorder lets slip that Echo only graduated early because Adam helped her with her science project and that means she'll have to go back to high school. Adam incessantly apologizes only for Echo to throw it back in his face:
  "Save it Mr. Young!"
• Mr. Invisible: After her history partner harshly rejects her advances and says she's out of his league, Echo breaks down and starts crying. Even with Adam (while invisible) handing her the handkerchief, it still focuses primarily on her being sad and stating out loud how she wishes she could find the right guy.
• Mr. Tutor: Ivy!Adam is forced to go on the trip to Italy instead of Ivy, so as to not reveal to Tater that he helped her cheat and as a result, Adam!Ivy tells Echo that she's not going to Rock Fest with her and Echo says she had s surprise for Adam and now, he'll never know what it is.
• Mr. Sasquawk: To keep Sasquawk from throwing Echo off the top of the skyscraper out of jealousy over Adam, Adam is forced to declare that he has no romantic feelings for Echo whatsoever.
  • She's surprisingly disappointed. Cue one of the saddest lines ever said in the series:
  "I guess I misread the signs."
• Mr. Double Date: Adam, not realizing that Echo's starting to fall for him, sets her up with Derby and pretends to be interested in Haley Strauperson to avoid acting jealous when Echo was hoping that Adam would be jealous of her and Derby.
  • The ending where Adam and Echo each express their disappointment with each other about how the evening went and they look to each other longingly as they agree that maybe they'll find the right one someday. So close, yet so far...
• Mr. Love Letter: Adam is unable to tell Echo that he wrote the love letter to her without also saying he wrote the hate letter that Slab mistakenly got because then Slab would then beat him silly.
• Mr. Freshman: Adam realizing he and Echo were briefly in the same 4th grade class and that he constantly verbally refused to meet and interact with her because Girls Have Cooties. He constantly wants to stop hearing the story because of how ashamed he is of how he acted and it eventually gets to the point that he's crying in his hands over it. Funny, yet still very sad indeed.
• Mr. First Impression: Adam's Love Confession to Echo is rejected. Seemingly.
  • Adam couldn't change the past without consequences and had to put every back to the way it was, meaning accepting that Echo didn't reciprocate his feelings. Again, seemingly.
• Mr. Memory: Preston Pickles accidentally wiping Echo's memory of her relationship with Adam.
• Mr. Kidd: Adam's emotional plea to Echo to try to remember that she's supposed to be with him.
• Mr. Court: It's very downplayed, but the fact that Ivy is punished for something the audience knows she didn't do.
• Mr. Spin-Off: Echo dismissing Adam's idea of a show about them being a happily married couple and in her spin-off idea (and Ivy's), she fears being caught in a loveless marriage with him. After so much build-up and the things they had to go through in earlier episodes in the season (before and after they get together), this feels like a harsh, sharp turn for her perspective to take.
• Mr. Finale: Echo mistakenly thinks Adam is choosing his quest for the "Fountain of Young" over her and leaves him. They're back together by the end though.
  • If you think about it, Adam and Ivy still never catch on to the fact that Tater is their father. Neither does he realize their his children as well.