My boyfriend doesn't know how to comfort me 😔

Kristie • My friends call me Keek . I was diagnosed with PCOS when I was 17. I am now 24 with a 1 year old baby boy and a 1 month old baby girl 👩🏻🧔🏼👶🏼👧🏻💕
I just found out my close cousin has epilepsy , he's having seizures daily 6-10 times a day and the doctors just found a tumor in his brain . Long story short it's too late and he's going to die . He's 23 I'm 21 , we grew up together and now he's going to die. This is by far the hardest thing I've ever had to deal with besides my miscarriage and I'm not doing so good at keeping myself together . My boyfriend sees me crying myself to sleep and doesn't hold me instead he leaves . He simply goes downstairs and sleeps on the couch . He doesn't understand that I can't do this alone . I need him and he's isolating me , he's a Leo and very stubborn . I'm scared if I tell him how he's making me feel by doing this he will take it wrong and think I'm just being dramatic . Someone help me word this properly . If I speak up right now it's going to sound like this "why do you keep leaving me all alone when I need you ?? Can't you just lay here with me and hold me ?? What's wrong wit you do you have no sympathy at all ?? I'm falling apart here " and that will likely start an argument .