She knows her brother has been secretly trying to steal Ivy (Ashleigh Brewer) away from Wyatt (Darin Brooks), and after realizing Ivy may be falling for the plot, Steffy (Jacqueline MacInnes Wood) could begin trying to stop the unthinkable from happening on The Bold and the Beautiful.

The Spencers, Forresters, Logans & Avants All Gather For Thanksgiving Dinner

She realized that Thomas' (Pierson Fode) plans to seduce Ivy haven't fully taken effect yet, but knows that Ivy may have somewhat cheated on Wyatt while he was in San Francisco-and is possibly contemplating doing more because she is having a hard time resisting Thomas' charms. However, the guilt over knowing that Thomas was betting he would succeed-and seeing a moment between the two at Thanksgiving-will cause Steffy to start opening up to Liam (Scott Clifton) with her suspicions that more happened between them than Thomas or Ivy is letting on.

"I don't know, it was just this little tiny moment, but it made me wonder if Thomas was being straight with me," she says in a preview clip for the Monday, Nov. 30 episode.

Wyatt Makes A Move To Secure His Relationship With Ivy

However, when she begins to then express her concerns about Ivy falling for it, Liam will begin to question whether or not Steffy is showing how much she still doesn't trust Ivy after their recent issues with her blackmailing scheme.

"You've had issues with Ivy in the past, are you sure that's not kind of coloring your perception here?" Liam asks =.

"No!" Steffy replies.

However, what Steffy doean't know is that after the incident which saw her and Thomas sharing a steamy makeout session, is that Ivy told him there can't be anything more. Unfortunately, Thomas is refusing to give up.

"I want more than just a few minutes with you whenever we get a chance," he says in the clip.

The Bold and the Beautiful airs Monday-Friday at 1:30 p.m. on CBS.

Tags: The Bold and the Beautiful CBS Soap Operas