Not wanted

Angus Young and Cliff Williams are together and happily in love. Nobody teases them because they are a gay couple. The two don't ask each other why.
Until one day something happens that shouldn't have happened: William Young finds out about Ang's and Cliff's relationship.
Angus discovers that his brother is the key to all his unanswered questions and why he always had such a strong bond with Malcolm. However, he also learns of Malcolm's darkest secrets. What is the older Young hiding?
Sorry for making Malcolm suffer so much in this story.