From what You saw, and what Pen told you, Tree had caught feelings for Bottle for quite a while due to her optimistic and oblivious attitude, And has recently had a hard time controlling his feelings, to the point where one day, he brought her to a secluded spot in the hotel, to try and talk to her, but it just evolved into Tree embracing Bottle and kissing her, the latter not fighting it due to her cluelessness, after that. He told her to not tell anyone, seemingly embarrassed and frustrated with himself as he thought he was taking advantage of her obliviousness, she didn’t understand that part either but happily agreed, Pen knew all of that from Bottle telling him a day later, she’s not good with secrets, and Pen had already noticed the weird behavior between the two, and so he told you, his best friend on his current team

Earlier today, Tree had this time brought Bottle to the room downstairs, with all the junk people weren’t currently using, kinda like a basement, Noticing that, Pen Brought you with him to investigate, to see if his friend Bottle would be okay…

As you listened down the stairs, you could hear Tree’s regretful and bitter voice "Bottle, listen for once, what happened last time, is a one off thing, we’re not doing this again…" Bottle hummed for a second before replying in a cheery voice "I didn’t see anything wrong with with it! Bedsides. You told me at that time that everything was alright, and to just let it happen!" you could hear the sound of Tree groaning to that reply, as Pen turned to you, concern in his eyes "Soo…ya think it could have possibly been more than just a hug and a kiss? I know Bottle’s not the best at describing things…" You did not know, Pen thought for a sec, then looked at you again "Actually…can you fetch me the camera set on the table near the register? Thanks…"

You nodded, got up, and left, as Pen turned towards the stairs again, listening to the ongoing conversation "No. We’re not trying that again, and I don’t want to uh, get in trouble for it" Tree said as Bottle chuckled a little "Why would ya?" Tree sighed as steps could be heard getting closer to the stairs "We’ll talk about this later…" Soon Tree came into view, at the bottom of the stairs, he had a worried and tired expression, as he looked up and noticed Pen staring at him, both were frozen. Unsure of what to do, until Tree broke the silence "You listened?" He said in a worried and angry tone, as he made his way up the stairs hastily, Pen stuttered stepping back "Oh- no! I-i was just trying to find something-" Pen said shakily, but the anxiety got the better of him as he turned around to run, Tree leapt at him, and latched onto his back, Both falling to the ground as Tree grabbed Pen’s hands in his and pulled him closer, pressing his back against his chest "Don’t say anything to anyone about this! Okay!?" Tree says Harshly to Pen leaning closer with a slight blush, as Pen tried to get up from his knees "I didn’t see anything! I swear-" He shouted as Tree brought Pen’s own hands to his mouth to shut him up, he let go as Pen stopped shouting and struggling "…I won’t tell anyone okay?" Pen said in a desperate tone. Tree didn’t answer, conflicted, soon after, Bottle came up the stairs and looked at the two "Hm? Oh, you want to befriend Pen Too! That’s nice! As you said last time, spread the love!" Tree froze and looked up at her in horror and embarrassment "What? No- don’t say that?!" He said his face growing red and ashamed as Pen looked increasingly worried with a slight red hue on his face, soon after you came back in the room, staring at the two on their knees, Tree behind Pen grabbing on to the latter’s hands, and at Bottle who gave you a cheery smile and waved