Get him hard again. Start jacking off slowly. after a minute of slow stroking, go to a slightly faster pace.
We'll call it medium.
After 2 minutes of medium stroking, I want you to speed up a bit more. Don't you dare cum yet. I'm going to bring that hot blonde back so you can cum on her tits.
If you get close and have to stop you have to let him get soft and start slow again. Got it. Good.
After 2 more minutes you need to bring him to the edge one last time...
Hold him on the edge for 30 seconds and continue...