What is love?

Previously

…And earthly anchors start to be unmade, You, my dear Rex, remain a constant truth, A guiding light from age to vibrant youth. Did I once fear the changing of the tide, The ebb and flow where passions might subside? Perhaps a flicker, a fleeting, whispered doubt, That love’s bright flame might someday flicker out. But looking at you, sixty-six years bright, I see the brilliance of perpetual light. You are my North Star, fixed within the blue, My steadfast guide, forever strong and true. Through every darkness, every shadowed plight, You are the beacon, burning ever bright. You anchor me, you give my spirit flight, My constant star, my everlasting light.