After a romance show

Normally, I wouldn't make a thread looking for suggestions, but I'm kinda stuck trying to find something...

I'm after a romance type series but...

Well.. I'm after something that starts on a high, everyone is happy and the relationship is all good, then stuff happens and more stuff... what then causes the protagonists to start seporating and at the end of the series... thats it,,, they have broken up... No happy end to be found

I can literally find nothing... Rumbling hearts and School days comes close though...

Or simply more shows like School Days would also be cool

Thanks