I don't believe there's any such thing as a wasted load. I know when I was a teenager, I was happy any time someone touched my dick, let alone was kind enough to take his time and jerk me off.
Maybe he wasn't ready to give a blow job. But still, he could have at least spit on that beautiful cock to lubricate the head a little to maximize the pleasure for the blond boy.
wow Hot scene, reminds me of my youth, working on a farm one summer, a coworker and I did this too. I couldn’t take my eyes off his big bulge and finally he put his crotch toward me and said “you want this?” Of course I did, we ended up sucking each other off, then went back to work like nothing ever happen, even the rest of the summer, no mention or anything of that day again. Weird!