Orange Gelatin Salad with Pineapple and Buttermilk

This salad is very easy to put together and it tastes so wonderful and refreshing.  Although it's easy to put together, keep in mind that it takes about 8 hours to fully set plus the cooling time in between steps, so prepare it in advance. :)  It is well worth the wait!  It's absolutely delicious!  Enjoy!
-1 (20 oz) can crushed pineapple, undrained
-3 Tbs sugar
-2 (3 oz each) packages orange flavored gelatin
-2 cups buttermilk
-1 (8 oz) container frozen whipped topping, thawed
In a small saucepan, mix the pineapple with the juice and sugar.  Stir well and bring to a boil.  Remove from heat and stir in the gelatin.  Mix well and let it cool to room temperature.
Pour the buttermilk in large bowl.  Add the pineapple mixture and stir until well combined.  Stick in the fridge and let it sit for 1 hour, or until partially set.
Fold in the thawed whipped topping.  Mix very well, cover and refrigerate for 8 hours or until fully set.  Enjoy!