Dale admitted that he did, but he didn't tell Kat about it because he wasn't feeling the relationship and he "deaded it." Kat was very upset since she thought that Dale should've told her about the kiss because she would've found out about it when she watched the show back.
However, Dale insisted that he didn't need to tell her because nothing came of it. Dale was angry that Kat had brought up the issue right before a rose ceremony, but she gave him her rose anyway. Their argument erupted again, though, when, after the rose ceremony, Kat tried to talk to Dale about it again.
A Bachelor in Paradise season 10 star thinks that Kat Izzo and Dale Moss should break up after their huge argument during the fourth episode.
In an interview with EW, Bachelor in Paradise season 10 Head of Paradise Relations Hannah Brown stated that she believed it was time for Kat and Dale to break up after their argument. Hannah explained that, at first, she wanted to give Dale the benefit of the doubt, but then she changed her mind.
Hannah said, "Okay, so at the beginning for like a split second, I was really trying to understand where Dale was coming from. But then he started talking in all these weird metaphors and sayings, and then he was telling the guys that he just didn’t want to fight on a rose ceremony night."
Hannah concluded by offering some advice to Kat and Dale, after it became clear that they weren't communicating. She said, "That was really tough to watch! My heart honestly went out to Kat in that moment. I think it might be time for both of them to start looking at other connections — 'cause as a viewer it just doesn't feel right anymore."
What Hannah Brown’s Bold Advice To Kat & Dale Means
Kat & Dale Already Have Too Many Problems
Kat and Dale have been through a lot in their Bachelor Nation experiences, and they've both jumped into engagements before they really knew the people they'd fallen in love with. Kat started out in Zach Shallcross' Bachelor season and later accepted John Henry Spurlock's proposal during the season finale of Bachelor in Paradise season 9, while Dale popped the question to Clare Crawley just 12 days after meeting her during The Bachelorette season 16.

Our Take On Hannah Claiming Kat & Dale Need To Break Up
Hannah Is Probably Right About Kat & Dale
After everything that Kat and Dale have been through in their love lives, it seems pointless for them to continue their relationship if they're already having so many problems from the beginning. Hannah is right that maybe it's time for them to move on to other connections. Kat had a valid reason for being upset, but Dale refused to acknowledge it. She deserves better.
