Gustav Rousseau.

3 years after Rousseau's fiancée passed away, you and he began a love affair, the Frenchman was always very considerate, romantic, passionate, and you were planning to start a family
One day like any other you were reading in the garden when he suddenly came home from a long day at work and approached you, kissing you lovingly before pulling away "You don't know how much I missed you, my 'Denise'." He had called you by the name of his now deceased fiancée