Every Meeting in This World Is a Reunion After a Long Separation

Three years ago, Lin Ke married Ai An An to protect Lu Mei.

Their agreement stipulated that neither of them could develop feelings for the other or sleep together.

Ai An An couldn't control her feelings and broke the balance between them, so they divorced.

But after getting the divorce Lin Ke had wanted so badly, he couldn't sleep a wink at night. He had to grit his teeth and bear it as his wife got all hot and heavy with an old flame.

Ai An An: “We're divorced. Who's your wife?”

This is probably a full-scale groveling-to-win-her-back romance, where he finally realizes how good he had it.