The kiss he’s referring to followed that traumatic attack the two endured in season 3. Teeter convinced Colby to go skinny dipping with her in the river, and just as they get into the water, they get trampled by John Dutton’s adversary Wade Morrow and his son’s horses. We didn’t even know if they survived or not until we see Colby frantically searching for Teeter in the dark in the next episode, finding her with a severe facial injury. We see a different side to both characters as he takes care of a now vulnerable Teeter and takes the initiative to kiss her instead of the expected other way around. Swoon.
After that wild ride in season 3, we really didn’t get much of this couple in season 4. They were mostly used for some extra laughs here and there between all of the other drama going on with the Dutton family (especially Beth and Jamie). When it seemed like Teeter might have to leave the ranch, fans on Reddit made it clear they wouldn’t stand for that, and thankfully, neither did Rip. She’s branded after all, and that makes her family for life.
So what does season 5 have in store for this couple? Hopefully, we get to see much more of them since it appears Jennifer Landon is taking on a bigger role on the show. I think we could all use a bit more of the bunkhouse, which, outside of the Lloyd/Walker feud, seemed to take a back seat last season with everything else going on. Either way, both of these characters are branded, so unless something life-threatening happens, there’s no way they’d leave the Yellowstone.