Jensen stood nervously in the dimly lit room, his heart racing as he waited for his girlfriend, Y/N, to arrive. He had spent weeks planning the perfect Halloween surprise for her, and now the moment had finally arrived.

As the door creaked open, Jensen's breath caught in his throat as he caught sight of Y/N, dressed in a stunning Halloween costume that took his breath away. She looked around the room in confusion, not expecting to find Jensen waiting for her.

"Hey, babe," Jensen managed to say, his voice slightly shaky with nerves. Y/N's eyes widened in surprise as she took in the romantic setting he had prepared - candles flickering, soft music playing in the background, and a small table set up with a bottle of champagne and two glasses.

"What's all this?" Y/N asked, her voice filled with wonder.

Jensen took a deep breath, mustering up all his courage before sinking down on one knee in front of her. Y/N gasped, her hand flying to her mouth as she realized what was happening.

"Y/N, you are my light, my love, my everything. I can't imagine my life without you by my side," Jensen began, his eyes locked on hers. "Will you make me the happiest man in the world and marry me?"

Tears welled up in Y/N's eyes as she nodded, unable to find her voice with the overwhelming emotions that flooded through her. Jensen's face broke into a wide grin as he slipped the sparkling diamond ring onto her finger, sealing their love and commitment with a kiss.

And in that magical moment on Halloween night, Jensen and Y/N knew that they were destined to spend the rest of their lives together, filled with love, laughter, and endless adventures.