I have an 2011 ram 1500 with a hemi. I've had it about a year, then the other day I noticed water under the front of the truck. Yes it was antifreeze. Climbed under and found the hose flange that bolts to the thermostat housing was leaking. Took a few minutes of watching and STRONG flashlight. Went to the parts store, another tale in itself, but got a gasket that said it was for 07 hemi, I believe. I took the flange off, it has a thermostat that looks like the gasket is made with it. But there wasnt a "normal" flat gasket in there. So, I put a little rtv sealer on the gasket and bolted it back together. No more leak. By the way, I couldn't get any antifreeze to come out of the drain in the radiator, got frustrated, and just took the flange off. Only leak I had, there is small hole in the thermostat to let fluid thru. Really only fluid I lost was in the hose.

Cost me 6.00 for the gasket and 30 minutes of my time.

Not saying that is your exact problem, but this is what I found.