I would like to recommend more, but I have started watching drama recently and have not seen much of them yet. There are some others I like, but they do not meet requirements (there are either triangles or sad moments, break ups, etc...). I could only recommend some anime. There are many genres and they can have same emotional impact as dramas. Pure happy, easy to watch slice-of-life comedy: k-on, non non biyori - these are good for bad days, but have no romance. Or romantic movie with happy ending: Kimi no Na wa - one of best anime movies.