Francesca wasn't happy with Kelz after his brief response to her breaking up with him after their fling on Too Hot To Handle. She wanted to try to renew her feelings for Harry and realized she wasn't into Kelz as much as she thought, but she was still miffed with his reply.
Of all the characters on Too Hot To Handle, Francesca was perhaps the biggest get. Her robust Instagram following has brought her enough wealth to be undeterred by the deductions that ensue when she hooks up with someone new. Most of the other cast members have at least showed some caution. Francesca came in hot, making out with Harry against the behest of Lana. There was a debate as to who instigated the kiss, which led to a temporary fracture between Harry and Francesca. Although Harry wanted to continue the relationship, Francesca scurried off with her best friend Haley. The girls agreed that they would make out in private and throw the blame on Sharron and Rhonda. That tactic worked...until they realized that Lana isn't just an Alexa twin. She's an omnipresent being capable of revealing whatever she wants to whomever she wants on a whim. When Lana busted Haley and Francesca, the Instagram-famous model began phase 3 of her plan to drain the bank.
Francesca and Kelz were selected to go on a date, a move clearly meant to irk Harry. Kelz got close with Francesca in the hot tub. She baited Kelz into trying to kiss her, allured by the drama the move would stir up rather than the mesmerizing physique of Kelz. The self-proclaimed team accountant showed remarkable restraint in preserving what remained of the cash prize, keeping his lips away from Francesca both in the hot tub and in the shower.
Though Kelz didn't lock lips with Francesca, it was obvious he had developed an interest in her after their date. When Francesca approached Kelz while he was sculpting his lats with a pair of dumbells and basically told him it's over, he responded with "cool." Francesca wanted him to at least show some sign of sadness, but mid-workout Kelz was more concerned with his remaining sets.
Kelz's response to Francesca's abrupt breakup is representative of the attitude all the contestants of Too Hot To Handle have when one person leaves them. They know they have options because they are all objectively attractive human beings. It is only a matter of time before they find someone else. Kelz realized this. Francesca had a hard time grasping that someone was fine without her.