Catholics: 'To Cross Oneself'
I am curious as to why Catholics cross themseleves. My boyfriend is not a serious religious follower, as does not attend church regularly but I think he went when he was younger. I quite often see him 'crossing himself' and saying the words, father, son and the holy ghost I think? And he even kisses his hand. Often I have wondered about asking him why, but never plucked up the courage to do so, as I do not wish to embarrass him.
Basically just curious as to why he does it, especially as I have noticed when he does it, it seems to be when one of us mentions death or a deathly experience, is there any relation between the two?