"In all child custody cases, including those between a parent and a non-parent, 'the best interests of the child are paramount and form the lodestar for the guidance of the court in determining the dispute.'"
Bailes, 231 Va. at 99, 340 S.E.2d at 826 (quoting
Walker v. Brooks, 203 Va. 417, 421, 124 S.E.2d 195, 198 (1962)). However, the principle is well established that "the rights of the parent are, if at all possible, to be respected."
Walker, 203 Va. at 421, 124 S.E.2d at 198.
In custody disputes between a natural parent and a nonparent, the law presumes the best interest of the child will be served when in the custody of the natural parent. Based on this presumption, "the rights of the [natural] parents may not be lightly severed but are to be respected if at all consonant with the best interest of the child." To overcome the strong presumption favoring a parent, the nonparent must adduce by clear and convincing evidence that: (1) the parents are unfit; (2) a court previously has granted an order of divestiture; (3) the parents voluntarily relinquished custody; (4) the parents abandoned the child; or (5) special facts and circumstances constitute extraordinary reasons to take the child from the parents.
Mason v. Moon, 9 Va.App. 217, 220, 385 S.E.2d 242, 244 (1989) (citations omitted). "The burden of showing the existence of circumstances which would deprive the father of the right to custody of his [child] is upon the parties opposing this right. Such evidence of unfitness must be cogent and convincing."
Judd, 195 Va. at 996, 81 S.E.2d at 436 (citations omitted).