I'm very hesitant to say anything on this topic because neither of them are saying anything. I do have a bunch of things rumbling around, much of which is unrelated, but I might as well list them all. (NOTE: I've had this open all afternoon so I've missed the latest back and forth...lol)
1) I really think people read way more into each post and favorite from Ed. I think it's pretty clear that he and his friends have a history of teasing and joking around on twitter and have used it in much of their communications, with inside jokes quite common. Ed's continuing to use his twitter that way while at the same time using using it in a somewhat professional capacity, which makes people scratch their heads and search for meaning that more than likely doesn't exist.
2) I want to believe that Jade is moving away from Ed, but she was very good at pretending to others while in the house and I have no reason to think anything has changed. I DO think that, more than likely, she is the one who is limiting their interactions on social media. Why that is, I'm not sure. We don't really see her interacting with people, other than fans, on there, and she usually is only responding to posts. Otherwise she just posts very neutral updates, so her not posting to or about Ed is not out of her norm of regular behavior. However, there did seem to be a shift after she got home to Ballina the first time, so it COULD be more about trying to overcome her "stalker" image from the show.
3) In a strange way, the best thing that has happened is the Ed refusing to commit to a relationship. I think if he had pulled a Tully and gone head first into the relationship after the show was over, Jade would have been over the moon ecstatic. I have no doubt that she would have done what Drew is rumored to be doing and basically shifted her life to Melbourne and focused almost completely on Ed and the relationship. Because of his hesitance, I think she is establishing her own image separate from him and prioritizing her career, much to her benefit. If, in the end, the relationship doesn't work (and I don't think it will), it will hurt her personally but not necessarily professionally.