Here's an interesting article that adds credence to my theory that EB might very well have been spending time with another man - the man who called one week before she went missing, the man who EB was with at the Silver Dragon restaurant a couple of weeks before - and the same man she might have met in the valley, drove out of the valley with, and was killed by when she explained that she actually had a boyfriend and the same mystery man who drove her car to get rid of the body; and, a man who EB decided to leave out of her diary in the weeks leading up to her disappearance.
http://www.mirror.co.uk/lifestyle/sex-relationships/relationships/nearly-half-women-relationships-plan-4323872
If RB's friends are to be believed , he had begun to exhibit some frustration in the relationship with EB due to what he perceived as EB's obsession with alternative medicine and, by EB's own admission, her moodiness; he issued her an ultimatum several weeks before EB went missing to dump holistic medicine or he would walk, hardly the action of a jealous, possessive man. I pause to note that LE played the jealous, possessive angle but a closer look at the diary reveals that not once did EB ever claim he was jealous, possessive or controlling or that she feared him; that came from family members who were poisoned by the police and even then CB initially told the police that she wasn't even close to her sister and that as far as she knew everything with RB was okay; AC said the same thing and NS never once alluded to EB complaining about RB and all would have been the logical sounding boards. We also know that the "Dear John" letter turned out to be a diary entry from 1988 chronicling the time period when EB and RB met and even though EB was in a relationship with another guy at the time she met RB she deliberately tried to engender romantic feelings in him and admitted this in her diary entry; maybe not that much of a surprise that Raybould and the Crown hid that.
My point is that if EB sensed that RB was about to cut the cord it wouldn't be unusual for her or any beautiful woman to either have another guy waiting in the wings a la EG#2, who ironically EB's mother originally asked police to check out by sending a cruiser over to his house the morning after EB went missing; of course, she waited until RB was out of the house before she mentioned that to the police and it never surfaced until 2004.
"Slightly more than four in ten said they had got to know the man whilst they were with their partner, while a similar percentage said he was ‘on the scene’ long before."
During the trial it was disclosed that EB was dating both RB and another man, MF, during the summer of 1989; ironically diary entries from that time period were submitted to the CFS for testing and LE has never disclosed their whereabouts since. They would likely show that EB was essentially dating both RB and MS but MS testified so we know quite a bit about their relationship. MS graduated from a university in California in the Spring of 1989 and invited EB to his graduation, an odd thing to do for a man who would have known that EB was in an exclusive relationship with another man by that time, unless of course EB had kept in touch. MS testified at trial that he and EB had dated in the summer of 1989 and had no inkling whatsoever that there might have been someone else in the picture; as it turns out, EB was dating RB and MS was so stunned and in a state of disbelief when EB called him in early July to tell him she had begun seeing RB and she wished to be with him instead of MS that MS drove over to her home and told her he needed her to tell him face to face before she could accept it. When she did exactly that he dropped the birthday card she had given him weeks before at her feet and walked away. This was no stiff, BTW. This was a tall, blond, good-looking *advertiser censored* laude graduate who had his choice of many attractive women - hmmm, sounds like someone we all know - and when EB told him to hit the road he reacted like a school boy.
How do you think someone else a little less refined and little less gentlemanly might have reacted if EB pulled something similar with him? Maybe, unlike MS in 1989 and unlike RB in 1987, he didn't walk away.