Deleting item on relation of A Item Type When Delete Item on B Item

Hi Community,

I have create Item type, on that Item Type Relation I have create a Server Method (onafteradd) when I Added Item on A relation It will add item B on another Item Type relation. done It,

When I delete Related Item on Same Item Type Item Will affect on another item type relation.

but I am not getting any Idea for delete that Item on another Item relation.

How can i Achieve this,

thank you,

RAKESH