I wouldn't call that a ruined session. It is quite a clever bit of orchestration to have that many small preliminary ejaculations before finally getting your orgasmic thrill. I can only manage one; any attempt to get more would need a delay of a minute or two. Usually, my orgasmic thrill comes with the second rubbing. Good to see some masturbatory expositions rather that just a straight toss-off.
I love milking myself dry in stages like that. You get 5 orgasms, great lubrication for them....instead of just one blast. Thanks for spreading your legs and exposing your crotch and making me masturbate with you.