He bet on his absolute faith in his partner. I see nothing wrong with a free cool coat. Plus, the bet was basically, if I can seduce your partner, I can sleep with them, if not, you get my coat. Well, if you can seduce my partner, and I totally don't think you can, I'd kind of like to know it.
Agree. Yuu's friend basically sexually harassing Jin (forcing Jin by threatening to expose Yuu & Jin relationship to the public), even if later on he said haha I was just joking around, that was a cruel joke. If I was Yuu I'd at least punch the friend, if I was Jin I punch the friend then dump Yuu. But this is a bl manga, as long as you're good looking guy you'll get away with anything. (Sadly a lot of times, that's how real life works too).
But he said the bet was off. I think he didn't really agree?
Putting a move on your lover and doesn't get pissed?! COME ON ! I really like Yuu but how I hate him because of the last chapter! I mean how could you make a bet about your lover?! STUPID!