The last chapter of the previous seasons ended with “End of I Got A Boy Season x” while season 3 ended with “The End”, so I kinda doubt that there will be a continuation.. I’ll be thrilled if there will be a new season though (๑•ㅂ•)و✧
There's actually a continuation to this series! But it's actually under a different name called "I don't have a boyfriend" (since the literal translation for the title of the first 3 seasons is "I have a boyfriend"). I don't know whether one can say it's a spin-off/sequel since both titles falls under one link here https://www.webcomics(.)co(.)id/contents_main.php?links_number=1349&utm_source=inhouse&utm_medium=my_history (this is the official indonesian translation but you need to read using coins).
In the continuation of the story the focus shifted a bit to gunta & hyojoo's daughter.
After all that drama, the title and the title art looked too pure and sweet still, i’m sooo happy for the mc! I hope we get an epilogue though