"...you don't wanna do that." Ned knows the situation is different, will be different. Jesse and Galen are close - trust one another, presumably. Jesse will know what is happening, will have given his permission to let it happen. At the same time, he remembers the fear, and he can't stomach the thought of Jesse putting himself through that. He wants to look out for Jesse, too.

But then, what alternative do any of them have? Apparently what Galen had been doing to him was eating (he can join the club, Ned thinks), and letting him starve is doubtless not an option. But Ned doesn't want him making this decision without being properly informed.

"Jesse it was..." Ned swallows, knits his hands together in his lap. "Before you agree to do that you should know, it was pretty bad."

Understatement.