HELP MY BF BLACKED OUT!

ok well it was 3 am and my boy-friend  wanted to come over i  live 1 hour from him and my mom was ok with it ...and he went home at 1pm ish... right...to get to work ...when he blacked out and no one knows why..... and hes 19 and didn't tell him parents.... and they're pissed at me! wants to talk to my mom all that shit..ugh help!i hope they don't write me off for that.... ugh.... what to do  what  to do?? help ....wht would u say? im sooo scared!
 
HELP!!