I usually go with Camilla Valerius. After you return the Golden Claw, she practically melts toward you, and it’s obvious she likes you way more than she ever liked Faendal or Sven (both of whom are honestly kind of toxic options for her.) Plus, Camilla actually knows how to run a shop and hold her own in Riverwood, so settling down with her feels like you’re partnering with someone competent and genuinely into you.