<human>: Can you condense the text into three sentences or less?

Hey, guys. So me and my boyfriend have been dating for almost a year. He is 20m and I am 19f. Last year his mom died. (September 20th) The year anniversary of her death is 3 days from now. I don't know much about her, except that she overdosed on pills she was addicted to. He sometimes talks angrily about how she would never hold down a place or feed him and his brother. And other times he talks about how funny she was and how he loved her. But it's very rare I hear him talk about her. He has never seemed really upset or depressed about it. I thought he just didn't really care. He's said before that he was glad that Jesus had her. 

But last night he put a song on in the car and said to me that he listened to it everyday after his mom died for the longest time, but hadn't heard it in forever. Well I looked over in the middle of the song and he was crying like I've never seen anyone cry before. And I've never even seen him cry. And I had absolutely no idea how to console him. I really think he hasn't shown any emotion about his mom because he's hidden it, but the song just brought it out. He has never even visited her grave. 

I was thinking I could buy some flowers and take them to her grave on the anniversary day of her death, but I don't know if I should do that. Would it be better to let him suppress his feelings and not drag him down there? Or should I buy the flowers and suggest we take them? I don't know if he would appreciate the gesture, or if it would just depress him. But I don't want him to think I don't care. And I don't want to bring up bad feelings either. :/ Has anyone else been through his type of situation and know what I should do? 

And what should I do if he cries again? Other than hold him and say "I'm sorry." I had no idea how to react the last time other than to cry with him. In what way could I make him feel better?
<bot>: Boyfriend's mom passed away. Anniversary of death is in three days. Hasn't shown emotion until last night. Should I offer to visit her grave, or leave the whole situation alone?