Why does it hurt so much

Sparks of warmth flew through him as her form pressed against his own. As her whispers met his ears she'd feel that tension wash away from him. His body seemed to loosen a bit but remained rather... alert due to their closeness. Her small paws pressed against him and Inc leaned into her slightly, looking down into her eyes as she breathed his name. His own breath seemed to catch in his throat and her next course of action sent his mind soaring. Riva reached for him and Incubus leaned down slightly to meet her somewhere in the middle. The gentle touch of her tongue to his lips caused a shiver to run down his spine and the male opened his mouth to reply with a kiss of his own. "Riva..." The brute tightened his grip on her and sent his muzzle downward into her scruff. Nuzzling her he breathed through her sweet bed of inky fur, "Please... Never leave me." The thought of her carrying through what she'd wished on the day he found her cause a lump to form in his throat. He couldn't handle losing her. It would break him.