Anitar...
i could have written your exact post about 10 years ago.
it started with a bad temper.. punching a wall... then throwing a phone... as time went on ... i became the wall.
Your boyfriend does not have the skills he needs to learn to communicate what he is feeling through words...so his automatic reaction is to get angry.
In my opinion, if your boyfriend wants to get help GREAT. However, in the meantime, i think you need to have him move his stuff out ...and go back to his moms and learn to make those changes on his own.
If you know anything about the cycle of abuse ... there is the build up, the explosion, and then the "honeymoon" phase... where they are full of regret and go out of their way to make things "better" .... and then the cycle starts all over again.
along with the physical abuse.... abusers usually know how to manipulate as well.... and that wreaks havoc on your emotions and your self esteem.
do you want to go through your life not being able to express how you feel for fear that he is going to explode?
Is a three month relationship worth YEARS off your life trying to rebuild what he broke down?
Let him get his help... his problem is not your problem- at this point your #1 priority should be yourself.