Rats are very intelligent and social creatures, thank you very much.
I don't know who this girl is, but I could have really used her wisdom when I was 26. I hope she eventually decides that boys are not rats, although I can certainly understand how Alonzo gave her that opinion. On the other hand, she should probably be grateful to Alonzo for teaching her that lesson early, so she can just walk away from all the losers she'll date in high school. Sure, she may eventually lose her streak of breaking "none people's" hearts, but they'll just have to deal with that. We'll all have to deal with it, really, throughout our entire lives. It's just that only this girl knows it.
The story on this picture is pretty slight: this redditor claims to be a babysitter to the 8-year-old girl who filled out this diary/notebook/life-homework/journal thing, whatever it is. The working theory I have on a corkboard filled with pins, news clippings and string is that this notebook belongs to a teen girl, who then let the girl she was babysitting fill it out, before the teenager then posted it on Reddit. I call this the "what are three slightly dumb things a teenager might do?" theory.