I honestly think that they felt uncomfortable around jade because of ed. when he left they picked right up where it was left. That's as simple as it is for me. No hidden agendas, no false comforting, no sucking up. Ed was always coming up with conspiracy theories and the boys always knew this. Jade became one of eds cronies for them and therefore things changed, which is why so many fans also got turned off by jade. Ed left and it left room for jade to fix her relationship with the boys, and not even a few days and they are on good terms again. The jade that they knew came back to them and for fans it's a wonderful surprise to see this jade back. Just like she brings out the better in drew, ed brought out the worst in jade. That's how I see it anyways
It's my opinion too that the side of Jade who would join in pranks etc (like when she and Tim were laying there and she was laughing while he threw eggs at others) was stifled because Ed was so straight up and down about things and she was in the 'be on best behaviour' phase of the relationship. Because she perceived him as somehow perfect she tried to make herself that way too.
I'm so so glad that the boys rallied around her. You could just see how much Drew had missed talking to her, and I truly believe that the only reason he was so sneery towards her at times was because he resented the fact that Ed took up her time and he couldn't spend time with her one on one. I think Jade needs someone more like Drew, someone who will display their affection as openly as what she will.
I hope that she keeps herself open to them too this week because I really enjoyed them all back together yesterday.