The official translation is on renta, and it's not at all problematic like you all think.
The ML is 19 (and in college) when they meet again, and they don't even have s*x till he's 20 haha. That's the "waiting for him to grow up." bit.
It's actually a pretty cute/sweet story, don't give up on it!
the official page for this comic in korean is tagged with "#다공일수" which means multiple tops - one bottom
