I actually don't watch that many romance drama these days, I answered based on romance dramas I used to watch in the past. These days some romance dramas feels more like slice of life. Especially for workplace romance drama, it has little time for the couple to interact directly. But there's love confession and dating phase. Ehm, so it counts as romance.
And also yes, lovers separated spends more time for them to interact with other people during their break-up as compared to them interacting with each others so I guess my expectation is too idealistic.
It's only what they called. Bad ending is for separated lovers. Happy ending for the lovers to have happy merry relationship at least until the end of the drama.
I remember another ambiguous ending; Marriage with a Fool. It seems like a happy ending as both leads were married, but they still had contact with their respective other love interests. That's crazy, why reconcile?
For Matalada, there's still possibility for side couple to reconcile, given the fact they're still in close contact, and the fact that both still have feelings for each other and that SML changed for the better. The reason they're separated was because SFL felt that she had become like her mother when she actually wanted to be independent and married based on benefit (to be completely different from her pitiful mother) and the man he love/big liar and manipulative SML was similar to her playboy/cheating father. There's also this second girl/FL's best friend coming too, what if SML later dated both SFL and FL's best friend or SML dated FL's best friend and SFL want to reconcile because of jealousy, that's kind of horrible. I prefer them to never have contact for one perfect bad ending.