Consensual sex with a minor isn't by definition. I mean, even the _charges_ say 'sexual assault', so this is not something the GP is inventing out of thin air.

The fact that different countries have different cutoff ages for statutory rape (the girl was 16, whereas some countries set the limit to be as low as 15, in particular most of Europe is 16 or below) makes this much less of a clear cut than your comment implies.

It really isn't a lie. The state of Texas considers a 30 year old man fucking around with a "girl younger than 17 years" to be sexual assault. He has been charged with 4 counts of sexual assault.