[Even before circumstances encouraged him to assume that most forms of sudden physical contact are attacks, Gaeta was never much of a hugger. Since he's in a great mood and sees Sam coming—it would be hard to not see him coming—his reaction is awkward rigidity rather than subdued panic. Good to see you too, bro?]
Hey, we're on hugging terms. [Which seems strange, but there are worse people to be on hugging terms with. And hey, company! Good company!] Take a seat and stay a while.