languish over (someone or something)
To desire or grieve over someone or something so intensely that one becomes depressed or melancholy. You can't just sitting here languishing over your ex-boyfriend. It's over—you need to get out there and live your life! I find it disgusting the way people languish over the latest, most expensive tech gadgets, even though they literally have no need for them!
languish over someone or something
to pine over someone or something. There is no point in languishing over Tim. He'll never come back. She wasted half her life languishing over her lost opportunities.