One definition claims lolita being an underage girl with a small body build (petite).
However the term loli often is contradiction to it, although it still describes a petite girl, often dfc, it doe not define age as often loli's are 18+ in any and most sexual depictions, while being cute and "innocent" in all other depictions ( by "innocent" i mean not being a general sexual target, although in many cases, they are more dangerous than a nuclear missile.)
it all falls to stereotype and interpretation.
I asked him about that in real life and he said he lied about it. Although, I believe him not.
doesn't matter if he lied or not, if he did lie, it's impression is still negative, and leaves to discussion his fetish and sexual urges that drove him to lie about it this way. I'd say, he's a classic case of pedophile at this point.