Please Help Me Find This Manga

So I remember that a girl went into a bar crossdressed because she wanted to see who her brother was meeting/dating. It was a gay bar (? Not so sure anymore). In the end the crossdressed girl found the person she was looking for and they kinda went into a room/hotel (?). So basically a love story. I don't really remember but I think it was a webtoon (?). Soooo basically... Does anyone remember the title of it....

The ml and fl were already in a relationship and they were in a vacation to another country? The ml was cheating on the fl with another girl and that bitch followed them to their vacation spot as well and somehow the fl gets lost because of her. Then she ends up in the countryside, after that the second ml enters the story.The ml regrets his decision and searches for fl and when he finds her.It was already too late so the fl wants to break up with the ml.But they still end up together near a wishing fountain ?

Found it on twitter as a reaction meme but I suspect it's from a manhwa, where is it from? Help me find it

Okay, so I saved a photo of a manga from someone’s answer to a question, but I don’t know which manga it’s from. I don’t remember the question it was from, so I can’t even ask that person :(
Since I don’t know how to upload an image on here, here is a description of the photo:
[in a single panel]: A young man with light colored hair and wearing a gray t-shirt is lying on his side on the floor with a tired look on his face. He’s wiping the floor with a cloth and saying, “What the hell am I doing? Am I garbage? No, that’s being rude to garbage.”
Does anyone know what manga this is from?

P.S. I would appreciate it if someone could tell me how to upload an image (it would help answer my question, too!)