That reminds me when I was training my little nephew first couple of times he hesitated to swallow his sperm into his mouth a couple of times after that, you would enjoy taking every drop us from as he enjoys pleasing me and he enjoys the taste of Life load.. being by the time he was 14, he was the best cocksucker that I ever had! And I still love him today!
That's the way I do it. I usually swallow it all after I savor the taste and consistency; unless, my lover likes to kiss and enjoys when I 'snowball' it back into his mouth. Of course I will keep some for myself. Why pleasure your partner with a blowjob unless you take him and all of his cum at the end of the session? A blowjob without taking his cum is cheating you and he from a tremendous experience!
Try it with 7.