'The good news is he's alive': The rambling posts of woman embroiled in mysterious bush murder - as it emerges she is the victim's ex-girlfriend AND is now in a relationship with his accused killer

A 'fun-loving giant' mysteriously found dead after a bush bike ride was allegedly murdered by his ex-girlfriend's new lover.

Jarrad Lovison, 28, went missing while riding his bike near Moe in eastern Victoria on April 16 and his body was found in bushland on May 23.

After months of anguish for his family and friends, barista Samantha Grace Guillerme, 24, was arrested on Tuesday and charged with murder.

The next day Jake William Brown, 28, and Andrew James Price, 47, were also charged with murdering Mr Lovison in Moondarra.

A third person arrested, but later released without charge, was Mr Lovison's ex-girlfriend Ange O'Brien, 44, whom he dated on and off for three years.

Jarrad Lovison, 28, was found dead in May after disappearing a month earlier. Three people were charged with his murder this week, and his ex-girlfriend Ange O'Brien, 44, was released without charge

After months of anguish for his family and friends, barista Samantha Grace Guillerme, 24, was arrested on Tuesday and charged with murde

But Ms O'Brien had been dating Price for at least the past year - including the six months between Mr Lovison's death and his arrest.

The mother-of-three remained close to her ex and frantically searched for him after his disappearance, posting increasingly desperate Facebook pleas.

Ms O'Brien was concerned he had met with foul play as seven-foot-tall Mr Lovison wouldn't have abandoned his beloved dog Slade.

'No one has heard from him at all from nearly 9 days and he left his best friend at home... something isn't right!' she wrote on April 24.

Ms O'Brien has for the past year been dating Andrew Price, 47, (pictured together) who is accused of murdering Mr Lovison

'I hate to say it but it's time to really start to worry. So out of character for him and to leave Slade! He messaged me Thursday night and I haven't heard from him since and that's strange. I'm so worried... so damn worried.

'He was being a grump in the but that's him sometimes... but put it this way it definitely wasn't something I was worried about.'

Two days later she described the lengths she and Mr Lovison's parents, who described him as a 'fun-loving giant', had gone to in the search.

Ms O'Brien also eerily described how Price was supporting her through it all - at a point after he had allegedly murdered him.

'I've done everything I can think of, called hospitals so has John and Di... called and messaged heaps of people,' she said.

'Had the here talking with them, doing anything they suggest to do. Pricey has been amazing with it all too.'

On May 27 she thought, for reasons that were never explained online, that evidence indicated Mr Lovison was alive - but it turned out to be false hope.

'Well the good news is, he's alive, the bad news is no one has spoken to him as yet so massive relief that he's OK,' she wrote.

Ms O'Brien remained close to her ex and frantically searched for him after his disappearance, posting increasingly desperate Facebook pleas

Ms O'Brien was concerned he had met with foul play as he wouldn't have abandoned his beloved dog Slade 

On May 27 she thought, for reasons that were never explained online, that evidence indicated Mr Lovison was alive - but it turned out to be false hope

'I have known this since last night, sorry I didn't let you all know but I had to wait to speak to other people first and spent last night and today looking for him.

'I really don't have many answers yet but as soon as I know something will let you all know.'

Ms O'Brien has faced harsh criticism in the past two days after it emerged that Price had been charged with murder. 

But she faced her critics head-on in a post on Tuesday and vowed to never give up looking for answers about his death. 

'I'm quite amazed with what I have heard I have done over the past 6 months. I knew if we never gave up we would finally get answers,' she wrote.

'I know JJay would never ever have given up on me, so that's what I did for him! I'll never be OK with what has happened, I don't think any of us will be.

'He's never coming back though, is he. None of us will ever get to have his arms around us or feel his love ever again.'

Ms O'Brien eerily described and how Price was supporting her through it all - at a point after he had allegedly murdered Mr Lovison (pictured with Ms O'Brien)

The couple dated on and off for about three years until they broke up a few years ago but stayed close

Price and Brown were refused bail by Latrobe Valley Magistrates' Court on Wednesday, as was Guillerme on Tuesday. They appear again on January 7.

Friends believed after Guillerme was arrested that she couldn't have single-handedly killed Mr Lovison, as police allege, as he stood at more than seven feet tall with a muscular build.

Ms O'Brien on Tuesday vowed Guillerme would 'pay for taking him away' from his loved ones.

'You deserve nothing in this life. You deserve to have your whole world caved in on you,' she wrote.

'I hope you feel the same pain you have made us feel everyday.'

 On theory police are investigating, which friends and locals have also speculated about, is that Mr Lovison was given a 'hot shot' of drugs that triggered an overdose

Samantha Grace Guillerme , 24, was charged with the murder of Mr Lovison on Tuesday

One theory police are investigating, which friends and locals have also speculated about, is that Mr Lovison was given a 'hot shot' of drugs that triggered an overdose. 

More mysterious events were associated with the case, such as a report of Mr Lovison's green mountain bike being found propped up against a tree.

The bike was reported seen two days after he body was found on Becks Bridge Rd, Tanjil South, just north of Adam View Court where one of the arrests was made.

Police said it was then supposedly whisked away by a white wagon two hours later.

Guillerme also shared a photo on Instagram the day after he disappeared of her dog at the Lyrebird Forest Walk about 60km to the south of Moondarra.

Alongside the photo, she wrote the caption 'today's adventure'.

A friend of Guillerme said the woman came from a good family and had 'a bright future'. 

Guillerme was arrested on Tuesday when detectives searched a property on Coalville Rd, Moe - where a white Toyota was seized as part of the ongoing investigation.

Mr Lovison was riding his bike the night he mysteriously disappeared. Police are investigating a report the bike was seen resting against a tree in Tanjil South, north of Moe

The last known image of Mr Lovison going shopping in Moe, the day before his disappearance