Don't sulk. Or are you saying he wasn't good enough at it for you?

[And herein lies a discovery that even Jotaro isn't altogether aware of — the fact that while he may not be one to let his emotions find his way to their face, the same can't be said for Star Platinum, whose very being tends toward being influenced by Jotaro's suppressed emotions anyway.

So what an odd picture it makes, that Jotaro's got the beginnings of a very faint smile playing around the edges of his lips, while Star Platinum is flat-out grinning ear to ear.]

Because if it's that, he might want to try again and get better at it.