From Longman Dictionary of Contemporary Englishmake a big deal of/out of/about somethingmake a big deal of/out of/about something spokento get too excited or upset about something, or make something seem more important than it is I know I’m probably making a big deal out of nothing, but I’m worried about you. → big deal
Examples from the Corpus
make a big deal of/out of/about something• But Vassar taught me that I could do whatever I wanted to do without making a big deal out of it. 