“Days of Our Lives” fans know that the NBC soap opera never lacks in the drama department.

Of course, viewers also love the rivalries that have brewed over the decades (viaFame 10).

They’ve sabotaged each other too many times to count.

Lauren Koslow, responsible for one-half of the Kate and Vivian feud on Days of Our Lives smiling at an event.

Jennifer Horton and Eve Donovan have battled many times over the years.

She soon met and fell in love with Victor Kiriakis (John Aniston).

The power couple tied the knot, and Vivian was very invested in the marriage.

Days of Our Lives stars Louise Sorel and Lauren Koslow smiling in a composite image

However, Victor had other ideas.

Upon meeting Kate Roberts, he couldn’t resist her charms (viaSoaps in Depth).

Victor eventually decided to divorce Vivian and move on with Kate.

Louise Sorel posing on the red carpet.

However, Vivian vowed to get revenge on Kate for stealing her man.

She then became pregnant with the couple’s son, Philip Kiriakis, and gave birth to the baby.

In doing so, she stole that joy away from Kate, perSoap Central.

Months later, Vivian crashed Kate and Victor’s wedding rehearsal and tricked Victor into marrying her.

Of course, Vivian and Kate’s feud only escalated from that point.

Vivian eventually left Salem and returned again in 2009 following the death of her family member, Lawrence Alamain.

Kate survived the incident but nearly died when Vivian snuck into her hospital room and attempted to kill her.

Kate fell into a coma and wassaved by Dr. Rolf(viaSoap Dirt).