Swallowing Cum is just part of sucking a guy off. I could never understand why you would suck a guy and not be willing or desiring to swallow his cum....
I read studies on this believe it or not, lol...and apparently guys cum has hormones in it that make us want sex more than we would if we did not swallow it. But tbh we also absorb cum when they shoot inside us too, so we get the hormones either way
But umm ya bottom line for me is....When my guy shoots a huge load in my mouth, i KNOW I did a great job and made him feel awesome. Then I kinda expect he will do the same for me