To take sides
to express support for sb in a disagreement
Age gap
Age difference
To click
Become friends with sb at once
To hit it off
Have a good friendly relationship with sb
Couldn't care less
used to say (often rudely) that you don't thinks sb/sth is important or worth worrying about
Look up to sb
Admire or respect sb
Point of view
A particular attitude or opinion that sb has about sth