My sim just married Simeon (I did use the cheat to add to family, and kept it this time instead of backing out) and they just eloped.
https://i.imgur.com/MnU6FlW.png (sorry a few of her pics got in the way in the background, she had taken a pic with each of the Sages and this was the update I did for Simeon, I made him a Young Adult and plan to use the immortality potion on them both before I turn on aging) I love them together, they are so sweet, and the only trait they have in common is the snob.