Slice cake, using a serrated knife, horizontally into 3 equal layers.
In a medium saucepan, stir together sugar, cornstarch, and gelatin; add water. Cook stirring over medium heat until thick.
Remove from heat and allow to cool completely. Fold in strawberries.
Mix together cream cheese, condensed milk, and whipped topping in a bowl; set aside.
Place 1 layer of cake in a large clear bowl. Top with a layer of glaze, followed by a layer of custard mixture. Repeat layering in this order for remaining cake, glaze and custard. Top cake with 3 whole fresh strawberries and fresh mint leaves.