What does fuss over mean?, and where can I use it???
From Longman's Dictionary of Contemporary English:-
1to . worry a lot about things that may not be very important I wish you'd stop fussing - I'll be perfectly all right.
2 to pay too much attention to small unimportant details Paul was fussing with his clothes, trying to get his tie straight.
3 (American English) to behave in an unhappy or angry way The baby woke up and started to fuss.
fuss over somebody/something
to pay a lot of attention or too much attention to someone or something, especially to show that you are pleased with them or like them