The quest is broken. It just doesn't work anymore. The first few months of playing the game have been bug-free, but after a while the quest just got...bugged. Every time I get ED-E and take it to Novac's Old Lady Gibson, nothing happens. Absolutely nothing happens. Even when I go and talk to Johnson Nash before I set off nothing happens anymore. It used to be "Oh, well let me just go talk to Nash before I go see Gibson and I'll be on my way." Same routine, fix robot, talk to Nash, get quest. Now I don't even get the quest for the f*cking eyebot anymore. Does anyone have any suggestions to fix this?

There are several possible triggers. Check the wiki http://fallout.wikia.com/wiki/ED-E_My_Love

You don't get it... Now whenever I even talk to Nash at all, I DON'T GET THE QUEST. It's not that I don't know who to talk to, it's just that the game isn't giving me the quest anymore!