my boyfriend has Depression plz help

Amber

Okay so about five or so weeks ago my boyfriend was put into surgery to correct his broken jaw that he gained after a boy from my school punched him in the face and broke it. After the surgery the Doctor told him he would have sudden acts of depression and stuff from the medication and just from the whole surgery as a whole. But recently it's been worse than usual and it's bothering me and I don't know what to do. I love him to peaces and he is so kind and funny, but every so often he gets odd and I hate it when these things happen. Like yesterday he wouldn't talk to me for an hour while we were at my house because he was depressed, it's honestly worrying because I am a paranoid human so every time he gets like this I assume I have done something wrong. Also today I messaged him, he saw the messages and then just ignored them until a little while afterwards. Anyone know how to address this? And no comments of breaking up with him please as that is not an option cos I love him