Florida Statutes Title XLIII. Domestic Relations § 751.011. Definitions

(a) A relative of a minor child within the third degree by blood or marriage to the parent;  or

(b) The stepparent of a minor child if the stepparent is currently married to the parent of the child and is not a party in a pending dissolution, separate maintenance, domestic violence, or other civil or criminal proceeding in any court of competent jurisdiction involving one or both of the child's parents as an adverse party.