"Tell Me What" centers on the profound anxiety of emotional uncertainty experienced by a speaker who struggles to reconcile romantic assurances with deep suspicion about their partner's sincerity. Despite declarations of eternal love and beautiful shared moments, the speaker fears the vows may be only whisperin' sweet lies and is unable to trust the current outward display of affection. The song is structured as an urgent, repeated plea for genuine transparency, begging the partner to finally show me what's on your mind instead of continuing to hide the truth. Ultimately, the central tension revolves around the fear that when the moonlight fades, the partner will abandon the relationship, crystallizing the desperate question: will you stay or take flight?