Too much 4 me 2 handle!!

Last year my boyfriend and 2 best friends died 6 days apart from one another and my friend is feels it is his fault it happened and feels guilty. H"es so depressed b/c of what happened and i dodn't know what to do for him. the only thing is we live far away...like 7 states away...the whole situation with there deaths is soo complicated, i just can't handle it alone..plz help me!