Found my leak....

[D_Train]

So i was looking at my car and saw something hanging right underneath the radiator. upon investigation saw that it was a thin foam piece that looks like it came from the radiator. Regardless, i got under my car and saw coolant residue on the bottom of the radiator, like, the BOTTOM bottom (where it is skinny) and it looked like it was coming from a hold in the middle of the bottom of the radiator. This hole looks like it should be there though, as it has a few buddy holes on the outside of the radiator (it is symmetric). Does my radiator have a hole in it? It never drips on the ground and I only lose coolant when I am driving, but it is NOT a BHG. I have had many a test for a BHG and it is not that.