All of these relationships were ill-fated and suffered from infidelity on all sides.

They caused heartache not only to those directly involved, but spiraled out to affect many others, too.

But how exactly did that happen?

Hunter King who plays Summer Newman posing

Eventually she decided to recommit to her husband, but it was too late.

Jack had discovered the affair and promptly divorced her.

After they were both free, Phyllis and Billy tried to make a go of it.

Joshua Morrow and Gina Tognoni smiling

Though they grappled with business disagreements in the beginning, eventually the couple made their relationship official.

Of course, their happiness was short-lived we’re talking about a soap, after all.

Most recently, it came back to haunt him during his relationship with Phyllis Summers in 2018.

Billy Abbott and Summer Newman in a scene

She turned to her mother’s boyfriend for help.

However, Summer learned of her parents tryst and used the information to her advantage.

In fact, the last time that night was brought up was in 2021 by Billy himself.

Lily dumping a box of packing peanuts on Billy

By this pointBilly had begun dating fan-favorite character Lily Winters.

Though the couple enjoyed a year together mostly drama-free, that never lasts long on a soap opera.