Undertale AU Sibling Scenarios

UnderLust Bros X Heartbroken! Younger! Reader

Why I thought this would be a good idea, I HAVE NO IDEA. Also fun fact, I've NEVER been in a relationship, so no clue how this is gonna turn out.

Key:
(E/n) = ex's name

You burst through your front door, ignoring your family's questions, before you bolted upstairs and slammed your bedroom door behind you. Sliding down the door as you sat, you did your best not to sob loudly. You didn't want your brothers pestering you. You silently cried before hearing a gentle knock on your door.
"(Y/n)?"
"(Y/N)? WHAT'S WRONG?"
You mentally sighed, looks like you can't escape your brothers pestering. Standing up, you opened your door a bit, still hesitant on whether or not you should tell them. Sans' eyelights went out when he saw your tear stained face. It took you a few moments to calm down enough to speak, your brothers staying patient. They've learned to give you time when it comes to things like this.
"(E/n)...b-broke up with m-meeee!!!" you burst into tears again as you finished your sentence. Your brothers hugged you as you shook and sobbed.
After you calmed down some, they asked you some questions just to check. They were relieved to hear he didn't do anything to you that crossed the line, but we're still furious at what he did.

-Smol Time Skip-

You were on the couch watching TV, trying to take your mind off of boyfriends. You eventually got bored with your limited TV options and popped in one of your favorite anime's. Luckily it was one that didn't have a lot of romance in it so you wouldn't end up in tears again. After a few episodes, the door slammed open startling you and your brothers.
"WHO THE *bork* MADE (Y/N) CRY?!" Yelled a certain fish woman who was followed by her lizard girlfriend, a innocent child and fabulous robot in glasses. Frisk dashes towards you before tackling you into a hug.
"Hi Frisk." You smiled, sitting up and hugging them back. Undyne nearly scared you to death as she appeared next to you.
"Where's the bastard that made you cry?! When I find him I'll make him wish he was never born!!!" She exclaimed as she hugged you like the innocent being you were.
"Your not the only one." You brothers stared.
"I don't know where (e/n) went, nor do I care." You said. Mettaton then walked over with Alphys as they handed you more anime and your favorite bag of (candy/chips/other sort of snack.) You thanked them before starting to snack, sharing a bit with Frisk.
"No problem dearie, if there's anything else we can get you just ask!" Mettaton said as he smiled. You smiled brightly as you blush lightly, slightly embarrassed at the thought that so many people cared about your well being.

-Time Skip-

Alphys, Undyne, and Mettaton had set off to find (e/n) and give them a piece of their minds for making you cry. At the moment, Paps was making dinner as you and Frisk continued binging your anime, Sans was kinda half interested as he did stuff on his phone.
After a while, Frisk had to go. Hugging you goodbye, they walked out the door on their way to hang with Alphys and Mettaton for the rest of the night.
As you were putting away the anime, you noticed Sans and Papyrus giving you cheshire cat smiles.
"What?"
They then started snickering, you couldn't catch what they were saying, but it was something about you and Frisk. After a few moments, you caught on.
Your face turned (f/c) in a blush as you mentally freaked out.
"W-what?! No! Shut up!" You spat as teleported off to your room. You could hear them erupt into laughter downstairs.