Come and Hug Me - I have not finished it, but the love between the main couple is unmistakably strong, even after a traumatic incident. Male lead is all about protecting the female lead and they develop a deep bond ever since they are young, even though there is not much touching/cuddling just mostly pure romance and the first kiss happens quite late in the drama.
Mask - At the beginning the main couple is very distant/don't trust each other/don't even want to touch each other. But later on, especially near the end their relationship develops so much the ML would do anything to protect the FL and she is his only light that helps him conquer his weaknesses, while he keeps on constantly worrying about her and helping her out as well. The best thing about this romance is how you can see it develop and find the contrasts/changes in ML's behaviour and how the FL changes him. Furthermore, it involves a lot of cute/touchy/cuddling scenes but only a few kisses. I found myself squealing at their cuteness most of the time.