He doesn't cling onto the idea as enthusiastically as some might, and even narrows his eyes in vague suspicion (maybe Trixie's reputation precedes her?), but he does eventually look over at the drunken man while he holds his ground.

That guy's slurred goodbye is already reverting into more questions, it sounds like. He still wants to know what school they go to, and how old her "boyfriend" is. Given another moment, his weight also starts to shift forward, like he's planning on catching up with them.

However, that's as much as the tall boy needs to make a decision. He continues to look at the man for a moment in a way that does seem a little imposing--or at least distinctly unwelcoming--before finally continuing down the sidewalk exactly as he'd been planning on doing in he first place, plus one girl attached to his arm.