The notes doesn't really tell you shit but yeah. On the sole Karen love route, the second automatic event is her asking about those pictures from years ago. MC tells her it was Devon, Karen is reluctant but says she'll talk with him. Then the next day, again auto event, she approaches you in the bathroom, says that Devon denied everything and that proved it for her that the MC told the truth, they start kissing while Devon records them, they notice him, MC punches him down, Karen tells him to GTFO to a place she'll pay for (seriously wtf, MC was sent into military school, that dickwad gets a place of his own), Devon is all butthurt but leaves the game for now. I'm not sure what happens if you're mixing the routes, like Nicole NTR but Karen love, but in my playthrough, both love routes, he cannot be found anymore.