Eric's hand flew to Vala's hip to steady himself and he inhaled sharply when she pressed the tips of their cocks together, releasing his breath with a hiss. "Fuck, Vala," he moaned. He leaned in to kiss along her neck and tried to drop his fangs, only to remember that he had no fangs in Alcide's body. He growled against her skin and then nipped with Alcide's regular human teeth, not hard enough to break the skin but probably hard enough to bruise Sam's neck.