Ladies?

Hello ladies, so I have been with my bf for 3 years, but a year ago he had an accident and after the accident he changed a lot, stopped working, got very nervous, turned to be a little bit abusive and so controlling (emotionally and verbally). I'm trying to be there for him because I believe that when 2 people truly in love won't give up on each other on such cases. Thought he hurts me a lot lately, but I just want to be there for him. So for the last three days we have been arguing for simple things and he hurted me and has been so angry and controlling and slightly didn't respect me.

So I was thinking to make him a cake and to write him some sweet comforting words and to send it to him with a delivery person in the morning once he wakes up. (This cake is one cake that I made for him as my best friend before 7 years and he really loved it but I didn't know where the recipe was gone, so today I turned the house upside down in order to find it and I did). So do you think that the surprise of this cake and a note once he wakes up is a good idea? Or is it silly and stupid? I just want to make the tension fade way... so what do you think? And what do you think I should write on the note or the sweet little letter?

Please help meeeee