There you have it, you get the same passion back.
One lovely GF brought my passion back with her technique. For a long time I could'nt cum while lying on my back, only standing at full stretch, but she had a twinkle in her eye and used the back of her tongue to roll me around and it was all that was needed. Her passion relaxed me so much that she was the only one who could make me release like that and she was so proud of that fact.
It is exactly right, she had the passion, it was not just a 'job' to her, and it has been the same ever since. Those with that passion, that, dare I say it 'love' for you that works.