I can't remember the genre or the plot or anything >.< But there's a character (I think one of the lead characters, maybe a teacher? IDK I'm sorry!) who literally melts into a puddle of goo whenever he's stressed or overwhelmed. It's a running gag all through the manga, and at some point, the surrounding characters just go with it and pick up the goop and walk off, saying something like, "yeah, this happens, just give it some time and he'll go back to normal." Any ideas as to what the title might be? Thank you!

I think it’s Assassination Classroom
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No, I think it was a romance title, but thank you for the help. I love Assassination Classroom!

Furare Girl ? He melts for his girlfriend

I'm fairly certain that the manga you're describing is Furare Girl.