To blame for what? If you were single and Ed (or Drew for that matter) asked you for a second kiss, if he then asked if you'd like to share a bed, given there was actually a shortage at that time and the rest of the HM's practically set it up, how would you have acted? Drew may well fancy Jade, they were put in a situation where they had to act very intimate for a week after all and there are limited singles in the house this year, but, from Jade's perspective she also has to put some limits in place. I think she likes Drew but she doesn't want to lead him on either. I think she's trying to be as honest as she can with her feelings but she's basically in a no-win situation.
Ed on the other hand is acting like a victorian virgin, all hot to trot one minute and then having the vapours about his reputation the next and he absolutely is thinking about how this would play out both in the house and with the voting public. If he had a vagina he'd be getting called a cock tease.
edit for typo