advice please

Taylor
My boyfriend and I have been dating almost 6 months but the last month or so the mood between us just seems to have changed and we have been fighting about every little thing
He has a lot of mental trauma from previous relationships and he always asks me to never leave him. I'm afraid that if the relationship doesn't work out that he would harm himself
But lately I just don't want to be around him and his immaturity is just pissing me off and I feel like when we hang out I just get annoyed with everything he does.
Am I just too demanding? Or is breaking up something I should seriously consider?