That are self destructing independently because the weight of what they've done is hitting them. They can never even pretend to be normal siblings again.
They're going to spend the next 6 months refusing to see eachother but thinking of eachother every day - Shu trying to move onto dating women, as the sight of any dick makes memories of those sordid nights with his brother flash in the forefront of his mind, and Mysta with cheap thrills and masturbation, sinking deeper into self inflicted loneliness as a strange sort of penance.
They see eachother at a family funeral again, and find their conflicting, complex feelings towards eachother are still fresh and raw. They fuck in the church bathroom after only an hour of talking at the funeral reception, unable to deny their animalistic lust towards eachother. The cycle begins anew.
