<human>: So couple weeks ago I asked /r/askreddit how I should ask this girl I like to homecoming ( she said yes btw) the dance was yesterday and it was fun. But now I get a text tonight from a friend of her's telling me that she pretty much made out with this one guy during the week, but this isn't any guy, it's probably the biggest tool in our school like the lowest of the low, I right now... No idea what to think, can't even sleep, I honestly thought she was different from the other girls. So my question is how do I go about this the smart way?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: asked girl to homecoming, found out she was doing stuff behind my back, what do I do. I'm 17 she's 16