I suspect that most people don’t remember that Pat Martingale is Patricia “Rulette” Martingale, who ran the D&D game, owns the comic shop called Rulette’s, & went along on the mission that found the hidden basement in the hotel. Then again, I may be wrong & everyone knows, but I decided to make a note of it here, just in case.
Alex is about the same age as Carol, so she probably is exaggerating the idea that Rulette & Thomas “ran around” together unintentionally. She would have been young enough that she probably was only sort of aware of the particulars of their relationship & has just filled in the gaps in her mind. She is not, however, incorrect in describing Rulette as a corrupting influence. Although not malicious, she certainly enjoys exposing people to the wilder side of nerd culture, if that’s even the proper way to describe it.
If you would like to be corrupted by me please consider joining my Patreon for occasional racy images of various cast members & additional swears from time to time.