Hi everyone!

I have a 2011 2SS, with just over 70,000 miles. I love my car, it is the coolest car I have ever owned, and I am worried about it right now.
About a month ago I noticed the engine overheating, so I refilled the 50/50 Dexcool, and I thought with the weather getting up around 110° daily for the previous couple of weeks, it could have somehow evaporated.
But it happened again today. I filled her up with the 50/50 Dexcool mix, and the problem seems to be solved...again.
I inspected the engine, I see no obvious points where it could be leaking. No pools, collecting in the engine bay and no pink puddles underneath in the garage, hoses all seem to be in good shape.
But this kind of scares me:
When it's running I notice that there is a slight wetness to the exhaust. Not steam, no clouds or visible misting, but the exhaust does fog up a mirror. I am concerned that I have a slight head gasket leak and that's where the coolant is escaping to.
I turn wrenches all day and would prefer NOT to have to pull an engine head off my personal car.
If any of you experienced Camaro mechanics could lend me any guidance, or share your thoughts I would appreciate it. Thank you so much.