In the Star Wars Canon continuity, there is no interest seen between Kit Fisto and Aayla Secura. They have relational chemistry in the Legend’s continuity, though. The two of them shared a close bond and developed feelings for each other. However, both of them decided to stay loyal to the Jedi Order, and they didn’t pursue each other after deciding to not enter into a relationship. The chemistry remained between them, and they would often feel it when working together on missions during the Clone Wars. Jedi are not supposed to feel attachments, so they had to suppress their feelings for each other, especially since they were both Jedi Masters.