Help pls TwT

This is so so so vague. But does anyone know this BL:

It's a webtoon
I remember the MC/art style having big lips and that either him or the love interest was nicknamed after his big lips (i think)
It was an office setting
And there is also a third love interest(sorta) but he was more like the ex? Of the mc.

I dont exactly remember much abt the plot but now I cant get it outta my mind and I cant find it in my lists T-T