bodyguard!dex is doing mental gymnastics at that point, in his delusional mind just the tip isn't as bad as straight up fucking the person hes supposed to be protecting, it gives him plausible deniability if his contractors were to accuse him of committing the cardinal sin in his line of work, he pleads in between desperate, furious grunts "just the tip- only the tip", his hands bruising the meat of your hips in barely there restraint, he near pushes you down all the way in impulse when you beg "please, dex, i want it so so bad-" but he just hisses, tears of frustration in his eyes, he spits back "can't- you know i cant give it to you, baby. oh god- they'll have my fucking head for this-'" as if he's not giving you an extra inch with every time you sink down on him 🤭