I feel like I've seen this somewhere but I can't remember. May I suggest this one. It doesn't fit in the literal sense, yet it kinda does fit in a weird way.
2. Marry My Husband - In the first timeline FL is 2MLs wife who is cheating on her with her best friend. They kill her and she goes back in time to before she marries him and works out that everything that has happened will happen but she can transfer her fate to someone else. With this in mind she asks her 'best friend' if she'll help her take out the trash (referring to 2ML) for her. 'BF" agrees and actively works to steal 2ML from FL. Sorta but not really working together though only FL is trying to take down her (not) husband.