I'm just at the part in Ep.3 where Lilly (who I chose to take on the RV after she shot Carley) takes off in the RV, leaving the group at the train wreck. Just before she pushed Lee out of the RV, she said: "Come with me" and I had the option to say "Ok" but I didn't take it, as I couldn't stomach the thought of leaving Clem or the group.
But it left me REALLY curious. don't spoil the rest of the ep. for me please, but WAS there actually a way to leave with Lilly if I had chosen "Ok"? I can't imagine the rest of the story continues with just Lilly and Lee...does something happen right after that ends up making that choice worthless because Lee ends up back with the group anyway some how (say Kenny blows the tires on the RV as we drive away, with his gun)
I'm definitly going to do multiple playthroughs of the game after Im done playing through once, but my plans for my next play through don't involve befriending Lilly at all, so she might not even offer it to me when the time comes.