Just to be clear; This is a Teen Titans Go Story. Also, sadly I Don't own Teen Titans Go.
Inside the Titans Tower, Beast Girl's little sister Margret and Beast Boy's adopted daughter Gem we're playing snap when they noticed something on the floor. "Hey, What's that?" Gem asked, picking up a folded piece of paper. Margret took the paper from her and unfolded it. It was a Photo of Beast Boy. "A Picture of your father? What's that doing under Beast Girl's Bed?" She asked.
Margret and Gemma Took a Closer Look at the photo and saw something written on the Bottom left corner. However Margret's thumb was covering it. "Girl, Move your thumb for a sec. there's something written there." Gem Said, looking at the writing. So Margret moved her thumb and started reading it. It read 'I fell in love with you ever since we first met.'
The girls looked at each other really confused. They knew Raven had a major crush on him. So Margret thought "Well, maybe Beast Boy has a crush on someone else." "Come On, Margie. Maybe my dad can explain it to us." And with that the girls both ran out of room to find Beast Boy.
They found him in his room in cat form taking a nap. Gem placed a hand on Beast Boy's Back to wake him up. "Dad? Daddy, wake up." Was all Gem said before Beast Boy turned back into his human form and opened his eyes to see girls. "Oh. Hey, Sweetie. Hey, Margret. What's up?" He asked, rubbing his eyes. "Can we show you something?" Gem said, giving Beast Boy the photo.
Beast Boy took his time looking at it. Then he gave it back to Gem. "This is a photo that I gave to Beast Girl. She must've lost it under her bed. Maybe this might cheer her up." The girls once again got confused. "Daddy, What do you mean 'cheer up'?" Gem asked. Beast Boy then told the girls to sit next to him. "See, Beast Girl hasn't been herself lately. Because she had a falling outs with her ex, Terran."
"You mean they broke up?" Gem asked, lying down on Beast Boy's Lap. "Yeah, Sweetie. They dids. So she's been upset these past couples of days." Beast Boy said. Then Margret remember something. Recently when she saw BG getting home. She noticed that she was soaked from the rain outside and her eyes were bloodshot from her tears. "Oh. That explains why she came home all wet and sobbing that night. Do you think she'll still upset?"
"There's only one ways to finds out. And That is to go checks on her. Come on." Beast Boy said. As he and the girls left the room to check on Beast Girl. A few seconds later the found BG in her room under her covers crying uncontrollably. "Sees? I told you she was in a bad moods." Beast Boy said. Gem nodded her head in agreement. "Yeah, Dad. She does look heartbroken." "And it doesn't look like she can stop crying. Man, I feel bad for her." Margret said, looking into Beast Girl's room.
"I better go talks to her. You guys think of something to cheer her up." Beast Boy said, walking in the room. He hopped into her bed and tapped her shoulder to get her attention. Beast Girl lifted her head up with her make up running and her eyes bloodshot from crying. "Hey, Girl. You ok?" Beastie asked. Beast Girl tried to say something but she couldn't speak. So Beast Boy just took her into his arms and let her head rest on him as she kept crying uncontrollably.
"I-I m-miss h-hi-him s-so m-much." She said in between sobs. That was all she could say before she broke down bawling again. "Shhhh...It's okay, mama. Just let's it all out."
Beast Boy wiped the tears off her face and held her in his arms for a long time. He stay with her for a few hours. Beast Girl had started to calm down a little bit but her entire body was still shaking uncontrollably. "Feels any better now?" Beast Boy asked.
"I-I t-th-think s-so." Beast girl tried to say in between sallow breaths. Just then Margret came in with a bottle of water. "Here." She said, handing it to her. After a few sips BG was able to catch her breath. "Thanks." She said, in a raspy voice. Then Beast Boy remembered something his mother did to calm him down. When ever he was upset his mother would kiss him on his forehead.
So he went ahead and did the same thing with Beast Girl. He pulled her in close and kissed her forehead. "Girl, Can I tell you something?" He asked. Beast Girl looked up at him. "Sure." Was all she could say. Beast Boy didn't know what to say for a few seconds. Then he gather himself, took a big deep breath and said in a low voice.
"I think I love you..."