In a cultural moment where vulnerability is often curated and identity is endlessly scrutinized, Lukas Gage is choosing something braver: pure honesty. In his new memoir, “I Wrote This For Attention,” the 30-year-old actor and writer doesn’t pull punches, diving headfirst into the messiness of queerness, the humor that keeps us afloat and the uncomfortable but necessary truths about identity, shame, mental health and sex. Known for his fearless and often buzzy roles in shows like “The...