Sam's birthday
After Mon told Sam while sobbing how she felt embarrassed and low as she couldn't afford to gift Sam a gift for her birthday.
Sam feeling broken as Mon was sobbing, ends up confessing in a romantic way to Mon, not even expecting the same reaction back from Mon as Sam was tired of bottling up her feelings for Mon.
Mon was silent for awhile after the confession,Sam thought Mon doesn't feel the same way so she immediately switches topic to the lipgloss she got with Mon's money and asks for a 2 birthday wish instead of gifts.
Mon was confused but still lets Sam apply lipgloss on her lips as her first birthday wish.While Sam was applying the lipgloss,Mon was thinking how Sam said all of that to make her feel better as she is a nice,kind person and not in a like-like way as Sam has a habit of saying the opposite of whatever she wants and came to an conclusion in her head that Sam doesn't like her.
When Sam was done,Mon felt more confused when Sam asked her for her 2nd birthday gift.Even though Sam and her had the biting game,she still wanted her lips as her 2nd birthday gift.
After Sam got the permission she gave Mon the softest kiss she ever had in her life.Mon wanted ask Sam why she wanted her lips as a birthday gift when suddenly a scream made them immediately take a step back from each other and turned to look to see Kade caught them.
Extras: When Mon tells her friends or the trios about what Sam had told Mon on her birthday, they all shake their head in how oblivious Mon could be.