Elle was aware of Hailey's affair, and she had also shown Jordan the photos of Hailey's rendezvous with Cayden.
Any man in Jordan's shoes wouldn't be able to act as if nothing had happened.
It just so happens that Jordan was kicked out of the Steele family at this moment.
Elle guessed that Jordan's expulsion was, more likely than not, a sham to trick Hailey into divorcing him!
In order to win Jordan's heart, Elle deliberately criticized him for being a penniless man so as to trigger Hailey's materialistic mindset and make her feel terrible.
She also hoped that Hailey and Jordan would get divorced sooner so that she could marry him.
Diana smacked the table furiously and hollered, "Have you guys had enough!?! Why are you still arguing about trivial things like whether Elle's clothes are dirty and whether she has a boyfriend or not, at such a juncture!?!"