Chuuya gets this stupid idea to prank Dazai, and make him think that Chuuya has another boyfriend other than him

Dazai: Chibi~ who are you talking to?~ Chuuya: To my boyfrien- I-i mean to my friend...! Dazai: Wait what...? Your boyfriend...? I'm pretty sure I'm hallucinating. Chuuya: No you're not Dazai... I actually do like someone else... Chuuya then starts rambling about how great his "Boyfriend" is, just to piss Dazai off, and as you can see, it worked, he's VERY pissed off