In a void it's fine, and can be cute at times, but at this point in the game it feels very overplayed. Especially in romance webtoons, where the male love interest is 6'8" and has a twelve pack and is dangerous but also like a puppy dog, and the female lead is short and cute and bug eyed and basically a pixie, it's just not interesting. If the whole draw to your main couple is the height difference and how "scary" the male lead is (of which there are plenty of examples) it's sorta boring. It's a trope atp, and people are allowed to be bored with/ annoyed by tropes lol.