My book's character's heartache and confusion

Edit:
This is a tiny part of my manuscript. I am still working on the edit.

He went to the bathroom and looked in the mirror as he washed his hands. Why had this happened to him now, just as his jaw was sagging, his muscles softening and his joints aching? Just as he really knew love again, he began to wonder if his ageing torso could perform as he willed it to. Self doubt crept in as his reflection reminded him of a lost youthful zest for love. He wondered if he could dig up his past feelings and go on from here. His doubts drew him closer to the mirror inspecting gullies and creases across his brow.

He had a feeling of emptiness that stretched between both countries. He recognized it as homesickness and stubbornly withdrew from its pangs. Homesickness is for children away at boarding school, for the elderly in nursing homes, a longing he had to dismiss or he would cave into its depths. A sense of missing out on something, a longing for that glimpse of pleasure across the horizon, the promise of togetherness with a woman who was passionate for his presence. These are the things that Andrew had longed for all his life and they were within reaching distance now. Sometimes he would stare out the window at the park opposite his small unit, barely able to breathe so he wouldn't miss the sound of her footsteps approaching. She filled the gaps and made life for him real. When she filled the void, he was content and excited but when life took other directions and she was trapped with distractions of work and her children, he was unhappy. The emptiness and homesickness overwhelmed him. The little unit seemed large and empty of feelings. The icey loneliness overcame his memory of her presence and he forgot why he was here in the first place.