Is there another manhwa that gives off the same feel as this? I’m absolutely going crazy...

I'm not sure, but the same author made this webtoon (it's finished):
http://www.mangago.zone/read-manga/lovely_again_today/

It's also on Webtoons if you want to read on that ("A Good Day to be a Dog"):
https://www.webtoons.com/en/romance/a-good-day-tobe-a-dog/list?title_no=1390&page=1

this https://www.webtoons.com/en/drama/back-to-you/list?title_no=2113 gives me the same kind of feeling somehow, i think they are both bittersweet and beautiful ;;;;;;;