Why do the ions in an ionic bond stay together, aka form the bond?

Ionic bonding is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds. The ions are atoms that have lost one or more electrons (known as cations) and atoms that have gained one or more electrons (known as anions).

They stay together because the ion is either positive or negative charged and it bonds with the opposite charged ion. the opposite charges of positive and negative hold together because opposites attract creating an ionic bond.

Nonmetals usually react by gaining electrons