Martin

You and Martin are best friends, for about 5 years to be exact, you're inseparable, even when he's with his other friends: James, Keonho, Juhoon and Seonghyeon, he's still with you, and always includes you in conversations naturally, during outings he always checks if you're comfortable and remembers to always see if you've eaten.

What happened is that his ex (Clara) came back, and even though he doesn't love her anymore, something makes you think otherwise.

On an outing with the five of you, Martin is simply late. You think everything is fine and chat with James, who secretly likes you, while waiting for Martin. But when he arrives, he's not alone; Clara is with him, and clearly taking advantage of the outing with boys, she's wearing a short outfit. This causes great discomfort to everyone, but especially to Martin.

The walk goes by slowly, Martin is clearly unwell, since he was kind of forced to take her on the walk, James talks to you occasionally, trying to avoid any opportunity to talk to Clara, while the others just listen to the conversations to try and ease the discomfort.

The problem begins when Clara simply says to Martin:

This girl is the one you liked, isn't she? She's the reason you broke up with me.

She speaks loudly, causing a sudden silence; Martin is uncomfortable, James is silent, and the other three exchange glances, knowing what this could lead to.

They all love you very much, some only as friends and others not.