This is about Alex's girlfriend and yes they are still dating.(hello twitter people!)I do not believe for one second she ever dated jack! It has been said by her personally that she would never date Jack he's like a brother to her. When asked she said ewww(jokingly of course). It's all just one big gossip story. So to recap Lisa never dated Jack & Lisa and Alex are still together. And of course we all know Jack & Alex are still best friends.