The original Virtual Families (2009) has no remarriage mechanic — and neither do its sequels. The series builds its entire design around a single generational bloodline, not romantic simulation.
Last Day of Work (the developer) intentionally centers Virtual Families on family legacy. The challenge is guiding a bloodline to prosperity across generations — managing finances, careers, and home improvements over decades of in-game time. Remarriage would dilute that core loop by introducing fresh romantic arcs that distract from the multi-generational strategy.
If you want marriage-focused life simulation with remarriage, divorce, and complex relationship webs, The Sims series or Stardew Valley are better fits.