not greedy; break up vs make friends; positive guy!

Hi there,

-What is it called when two friends break up and when they make friends again?
-Is there any term for a person who keeps trying not do anything bad and always keeps distance from those naughty guys pulling his leg?
-What do you call aperson who does not want more than enough, i.e. one who is not greedy?

.
Reconciliation?
Prudent?
Moderate?
.

I’m not sure Mister Micawber,

Is there any word like a “pasteurized” guy?

That would a be a new one for me.