Mr. Davies added: 'This was not a fistfight that escalated: it was a murderous assault with a single-bladed knife with death as the inevitable outcome.'
Mr. Juskauskas had told Ms. Sulciene she travelled to meet Kvedaras on 29 May, and he planned to meet her in London on 12 June.
'Before his arrival Sulciene, reading the situation, had warned her that it would be 'dangerous' if Giedrius were to come to the house and meet Mantas,' said the prosecutor.
'She said they would fight, I knew Geidrius was a very jealous person'.
During a loudspeaker phone call, Ms. Sulciene warned her friend about Mr. Juskauskas and heard what she believed to be Kvedaras' voice say: 'F*** off, what can he do to me?'
Mr Juskauskas later visited their address and threatened to call social services.
Mr Davies said: 'Giedrius had said he would go to social services and was telling Mantas that he would 'come to the house whenever he wanted to visit his daughter'.
‘Mantas had said this was okay, but this angered the defendant, who started putting pressure on Mantas ‘telling him off for not kicking Giedrius out, for not arguing back’.
Asta then organised a meeting in the graveyard in Crayford near her home at which Giedrius belittled Kvedaras, saying he would visit Juskauskiene ‘whenever he wants and there is nothing Mantas can do about it’.
Ms Sulciene said in her statement: ‘Asta then suggested that they, Mantas and Giedrius, meet somewhere in Romford and sort it out.
‘They were initially going to meet at night in Shenstone Park in Crayford but one of them said that it’s not the best place to meet because it was too close to where they lived.
‘Asta then suggested to both of them to meet in some street in Romford where lots of drug dealings were taking place.
‘Her reason for this was because this way, if something happened, it would be blamed on the drug dealing,’ Ms Sulciene told police.
‘This made it clear to me that it would mean that somebody would be seriously hurt or killed.
‘Asta implied to me that she wanted the two men to have a fight for her and whoever won would stay with her.
‘I do not know what she meant by ‘winning’ but she did say that she wanted Giedrius to win. Asta then told me that Mantas was preparing for his meeting with Giedrius.
‘He was going out to buy something, but when I asked her what it was, she said that she couldn’t tell me on the phone.
‘I pleaded with her to stop the meeting taking place and even tried to look for Giedrius on Facebook to warn him.’
Juskauskiene, a home-visiting care worker of Iron Mill Lane, Dartford, Kent, was convicted of conspiracy to murder and perverting the course of justice.
Kvedaras, of no fixed address, admitted murder.
They will return for sentence on 7 February at Kingston Crown Court.