I recently found a lot of my friends were using "over" with an adjective describing their well-being/how they felt, e.g. "I'm sad over something/somebody" which in my opinion sounds somewhat off(?). As far as I'm concerned "about" would sound a lot more accurate.
I tried to find some difference between them and the only one I could find till now was that over appears to be used more often when the state of being relates to a person ("sad over someone"). However, I also found that "sad over a breakup" is used quite often as well (which isn't a person since it's "something"). Accordingly, I'm not entirely sure which one is right or rather sounds better.
Moreover, I'm wondering if this construction works with other adjectives like "sad", too, as in "I'm happy/relieved/etc. over something/someone".