If you liked the quirky characters and the humor in one drama then the other might suit your taste :) I would say that both of these dramas have a similar feeling and ironical take on life, even if Ho Goo's Love is way more humorously darker. Also, all characters doesn't seem far too predictable and have their own drive, which is not always directly revealed for the viewer.
Storylines are slightly similar.
In both dramas, the couples almost date before going separate ways and then meet again; one of them is a writer, and in both dramas the writers (one of the main characters) incorporate their lives in their writings; the 2MLs have similar roles (but it's more serious in ToL); they both talk about friendships; slow-burn romances; they are both overlooked dramas.
Temp of Love is a little deeper, more serious and longer, while Ex-Girlfriend Club is more humorous and the problems are on a less serious note.
In both dramas, the couples almost date before going separate ways and then meet again; one of them is a writer, and in both dramas the writers (one of the main characters) incorporate their lives in their writings; the 2MLs have similar roles (but it's more serious in ToL); they both talk about friendships; slow-burn romances; they are both overlooked dramas.
Temp of Love is a little deeper, more serious and longer, while Ex-Girlfriend Club is more humorous and the problems are on a less serious note.
Life is not perfect, we all have our weirdness, we all have "an illness" we're hiding, so finding the persons that can accept us as we are can be hard. Both series talk about relationships, friendships and acceptance. Both combine serious situations with comical reactions and their chracters evolve as the story unfolds.