"This all started so trivially"? Doesn't it always.
Still, rather perceptive of him to catch the meaning behind her statement of 'boys like him'. So it's not 'him' specifically, just boys that are like him. And yet, he clings to it. I suppose that's fine, may as well enjoy it while you can until the inevitable happens and she finds another.
Based on the last panel I think she really likes all of the boys and they are the ones who outgrow her. The tender way she holds his sleeping hand feels like she was the one saying "Enjoy this moment while it lasts."
The breaker of boys to become men... usually that person is some scared teenage girl, friend's mom, some thot or molester danger old lady.. Or just a working girl.... yeah.