i've got two ideas, the first is that he's the person she first met when she arrived in colorado 8 years ago. he might have been her neighbor, or someone she met randomly at the grocery store and struck up a conversation. either way, he was the one who eventually told her about the compound, maybe because they'd become fwbs?
second idea is a little cliche, but aurora is going to be expanding her business to now include a marijuana dispensary/pot bake shop now that weed is legal in colorado. she's a little clueless on how to grow and set it all up. so i was thinking he could be some expert that she's hired to help - either they butt heads, or mesh really well, open to that being organic, but they end up naked at the end of it.