old flame returns, causing trouble

[Cheesecake]

I can't think of an example offhand in this genre, but I've been looking for books where the hero's old flame returns for whatever reason and stirs the pot between him and the heroine.

Thank you for your help!

[BJ]

Night Broken
This might be what you are looking for? H's ex returns and causes havoc - she's the mother of his daughter.
Mercy is peeved but accepts the ex's actions for the sake of the H's daughter. The next book sees the H openly declare for the h leaving the pack with no doubt about his love.

[Cheesecake]

BJ wrote: "Night Broken
This might be what you are looking for? H's ex returns and causes havoc - she's the mother of his daughter.
Mercy is peeved but accept..."

That's exactly it. But I already read it. great book. Thank you!