Don't get so uptight.
Don't get so worked up.
Don't be so stiff.
Loosen up.
I didn't mean to hurt you./ I meant no harm.
Can't we talk it over?
Let's work it out.
Let's try to get along.
Let's be nice to each other.
Let's forgive and forget!
Let by gones be bygones.
Can't we patch things up?
Isn't there any way we can patch things up?
