Feeling Reed start moving his hips a little faster and more intently, Emerson was feeling a bit more confident in his ability to execute this properly. He knew what he liked, and he knew how his body responded to certain things. While he wasn't Reed, he was hoping that his knowledge would aid him in making this as pleasurable as possible.
He slowed his movement against Reed's erection, not wanting him to come involuntarily before they got to the main event, but wanting to keep him wanting more. He worked his finger in time with Reed's hips, curling his middle finger to start slowly working its way inside as well. As he did so, he lowered his head and bit one of Reed's nipples, then flicked his tongue against it and started sucking on it.