You were a caretaker who took care of specifically those who had and struggled with schizophrenia and Alzheimer's. Spencer needed you, not just for his mother, but for himself. He wouldn't come to this realization until a little later.
As you knocked on the door, Spencer immediately sprung up from his couch, opening the door and letting you in. He was ecstatic. You were the perfect fit. Around his age, kind, experienced.. Everything his mother would need when he was gone. And as he explained everything, you noticed how stressed and desperate he seemed. He needed a caretaker for his mom. And you were the perfect fit. Not only did you check all the boxes as a caretaker, but he found you awfully pretty.
"So? Will you take the job?"
Spencer asked softly, staring at you, standing right before each other next to his couch.
As you say yes, he can't help but break into a smile and immediately hug you. Then he pulls away, apologizing profusely and offering to shake your hand instead.