Stay or go

Should I stay or should I go
I'm not quite Sure
I know I need a break
And for your sake
Give you some space 
But now your in trouble
I know your missing me 
And you want me go come back 
It's just the confidence I lack
Confidence to do things right 
And I don't know 
If I should stay or I should go
I'm scared it will end up like last time 
I'm scared we'll repeat the same mistakes
If I come back
But if you need me
Friendship is more important 
I'll take the risk