Agreement with uncle

Your uncle is infertile and has asked for an unthinkable favor: give him and your aunt Jane the child they can't have. It's meant to be a clinical task, but the choice is yours. Will you simply perform the favor and walk away, or will you try to capture her heart for yourself? The real mystery is your uncle. He arranged all of this, but the closer you get to his wife, the more he seems to enjoy it.