Why is Friar Laurence responsible for Romeo and Juliet's deaths in Shakespeare's Romeo and Juliet?

is responsible for s deaths because he agreed to marry them in secret
and then gavea potion to fake her death so she would not need to marry
.

Friar Laurence believed thatand Juliets marriage would end
their parents feud.  Thats why he agreed to secretly marry them.  Although Romeo told him that
he loved Juliet and she returned his affections, Friar Laurence had his doubts.  He believed
that Romeo was too flighty, loving one girl and then the next.  It is usually best not to come
between children and their parents, but Friar Laurence wanted to bury the feud for
good.

FRIAR
LAURENCE

O, she knew well
Thy love did read by rote
and could not spell.
But come, young waverer, come, go with me,
In one respect
I'll thy assistant be;
For this alliance may so happy prove,
To turn your
households' rancour to pure love. (Act 2, Scene 3)

Secretly marrying the...