Complex sentence: After Beckett is hospitalized, the partner who notice Beckett's lesions confesses that he suspected Beckett had AIDS but never gave him the opportunity to explain himself and he would regret it for the rest of his life.
Split into simpler sentences: After Beckett is hospitalized, the partner who noticed Beckett's lesions confesses that he suspected Beckett had AIDS but never gave him the opportunity to explain himself. The partner remorsefully confesses that he would regret betraying Beckett for the rest of his life.