Jake is a denizen of the internet; he knows the theory of gay sex, but he doesn't have much practical experience, if any. He hasn't had the opportunity to test anything out with another person, and living in Army barracks doesn't give him much privacy to do anything beyond the basic 'jerk off as quickly and quietly as possible.'

That being said, as soon as Cougar's hand starts sliding up his thighs, Jake does his level best to spread them, whining when he finds himself hobbled by his jeans.