LOL it doesn't sound like tis possible does it? Well it's basically when you spend all day doing something SO awesome (usually with someone you have feelings for) that the next day when you go back to your normal life, you feel sad that every day can't be like that amazing day. The reason it's happy is because nothing "bad" happened. Something good happened that you wish would happen more often. It wears off within a few days or so, and is nothing that will last. What will last is your increased feelings toward the your "crush" so to speak.
Guy: Dude, how was yesterday with (insert lover's name here)?
Other Guy: It was amazing! I wish that everyday could be as amazing as yesterday. I've got bad case of Happy Depression.
Guy: Sucks man
Other Guy: IKR
Other Guy: It was amazing! I wish that everyday could be as amazing as yesterday. I've got bad case of Happy Depression.
Guy: Sucks man
Other Guy: IKR
by timeisoftheescense October 11, 2011
by Weno’s Backpack November 3, 2017
When a day/week/life is going good and you know something bad is going to happen and ruin your good vibes so you can’t help but feeling depressed that it’s gonna happen
by Kibbles17 February 20, 2023