A person who consistently blames themselves for everything may exhibit traits of self-blame or self-criticism. They could also be characterized as having a tendency towards self-guilt or self-condemnation.
We call them a teller
Seriously you need to call someone about it and always keep an eye on him until he gets help.
Immaturity. A child. I deal with a forty-eight year-old ex-business partner that does it in every business failing.
a stalker
Not always, no.
A loser
Sociable
You call them a snotty jerk. They are also selfish!
An Electrician
germaphobe.
A nudist.
An Electrician