Episode 15 of Season 1.
Roxy suddenly remembers all the good times with Connor. She feels so stupid for letting him go, and also remembers that girl Jessica, the girl he was hanging out with the other day. She then has an image of her and Connor kissing in her mind, although she never actually seen them do that before. She wants to go say sorry to Connor and win him back before Jessica gets in the way.... So she runs over, and is expecting Connor to answer, but instead it's Jessica, with something to say... Is it too late?