Hanahaki Disease - an illness where the infected cough up petals when they feel they are experiencing one sided love.

You where talking to Pavitr, making innocent conversation. Then, he started to talk about this new friend he had met, and the way he talked about them…it made you jealous. You coughed into your hand, and in it where red petals.

“What the-? Did that come out of you?!” He says in shock, looking at you with concern.