I didn't think so because he told her that he couldn't sleep because he dreamed about her naked body and then she still wanted to show him her areola.
Then when she showed her naked body, he actually continued to paint her without any impulse.
He pulled down her panties from her otherwise naked body and didn't even try anything lol.
Before that he had her on his bed as he played with and sicked her tits...and didn't try anything.
Any argument of "well, he did but she denied him" is laughable. He moved his hand, she said a cheeky "no way" and seconds later he's sucking on her tits.
That order of escalation is just not realistic. It's a virgin's mentality of how something like that would go down as a teen boy obsessed with this 10/10 would have to be REALLY denied in that situation. They'd push it as much as possible.
"Well, that can't happen in the story so soon"
Then don't put it in the story at all. Write it better.
I'm on record that his bedroom scene is the best in the story so far but that doesn't mean it makes any sense at all. It doesn't. It's just the first event where...something, anything...happens.