I'm lost

Basically there are two identical twin brothers but one is considered outgoing while the other one considered more....depressing?
There was basically only one person that would pay attention to he depressing brother, I'm he liked that dude, however he saw his twin brother kiss him.

Basically he got jealous and began pretending to be his twin brother saying that if he smiles there's basically no way for people to differientiate between them, which is later on proven to be true.

So when they fell it was actually the outgoing one that died, however he pretended to be the outgoing one, so the "depressing" one is the one thought to have died. In reality he's faking to be his outgoing twin brother.


[If you don't get it I can explain it better later but I gtg atm