A gently humorous take on a married man’s midlife gay reawakening, “Will You Still Love Me Tomorrow?” fans out to dramatize a full spectrum of relationship blues. Taiwanese-American helmer-scribe Arvin Chen’s sophomore feature veers slightly from the fluffy, fanciful charm of his debut, “Au revoir Taipei,” in favor of deeper character studies and more insightful reflections on life’s vagaries. Tonally flatter than its predecessor and a bit lacking in physical elan, it nonetheless progresses engagingly to a resolution simultaneously poignant and heartening. Pic should find love among straight Asian urbanites yet prompt mixed reactions from gay viewers.