To do almost everything with that person
Joined at the Hip
close your mouth and be quiet
Zip your Lips
Very happy or delighted
Tickled Pink
Two people or things are very alike or similar
Two Peas in a Pod
to take a really short nap
Cat Nap
Do ANYTHING you can to make something happen
Bend over Backwards
Time passes by very quickly
Time Flies
to be really nervous about something
Butterflies in my Stomach
Don’t take on more than you can handle
Bite Off More than You Can Chew