Hunting for a movie can feel like a treasure hunt, and 'The Other Wife' is one of those titles that pops up in different places depending on which version you mean. There are several films and TV movies with that or very similar names (and not to be confused with 'The Other Woman'), so the first thing I do is check the year or an actor name to make sure I'm tracking the right title.
Once I know which one I want, I usually consult a streaming-availability aggregator like JustWatch or Reelgood — they show where a title is currently streaming, available to rent/buy, or on free ad-supported platforms in your country. If it's a recent TV movie, Lifetime or Hallmark streaming hubs sometimes carry it. For purchasable copies, Amazon Prime Video, Apple TV/iTunes, Google Play, YouTube Movies, Vudu and similar services commonly rent or sell movies. If you prefer free legal options, check Tubi, Pluto TV, and Freevee; they rotate content a lot and sometimes have older TV movies.
Don't forget libraries: Hoopla and Kanopy (if your library supports them) are awesome for finding quirky films without extra cost. If streaming fails, look for used DVDs or Blu-rays on marketplaces like eBay or secondhand stores, or search WorldCat to see if a local library holds a physical copy. I always try legal sources first — it keeps things simple and usually gives decent video quality. Happy hunting; I get oddly satisfied when a long-sought title finally pops up on a stream.