In a medium bowl, dissolve the strawberry Jello in boiling water. Stir until completely dissolved.
Add the cold water and mix well. Let it sit at room temperature for 10–15 minutes to cool down slightly.
Fold in the thawed whipped topping gently until well combined. You’re going for creamy, not foamy.
Arrange sliced strawberries into the pie crust. Pour the Jello mixture over the berries, smoothing the top.
Refrigerate the pie for at least 4 hours or until fully set.
Slice, serve, and try not to eat half the pie in one go.