Honestly, the ST has done multiple solid romances after both previous trilogies couldn’t even get one without it being creepy.

But back on topic, I think the problem with the kiss is that while the subtext is there in TLJ, it’s just that: subtext. I didn’t catch onto it on first viewing and even after the Reylos converted me, I still wasn’t sure if those vibes were intentional or not. The elevator scene definitely has them in spades.

So point is, you’d need to make their feelings a little more explicit.