Joynes reportedly groomed her first alleged victim, Boy A, by buying him a £345 Gucci designer belt.
A teacher has been dragged to court for getting pregnant for her 16-year-old student.
It was gathered that the teacher became pregnant after sleeping with a teenage boy while she was on bail for allegedly having s3x with a pupil, a court has heard.
Rebecca Joynes, 30, is accused of six counts of engaging in s3xual activity with a child, including two while being a person in a position of trust, she is currently on trial at Manchester Crown Court.
Joynes reportedly groomed her first alleged victim, Boy A, by buying him a £345 Gucci designer belt - before taking him to her then flat in Salford, Greater Manchester, where they allegedly had s3x twice.
She was suspended by her school during the subsequent police investigation into the incident - and later she told police that no s3xual activity had taken place. She was bailed on condition she had no unsupervised contact with anyone aged under 18.
Boy A attended court and answered questions from Joynes's barrister in a recorded cross-examination. However, prosecutor Joe Allman told jurors on Monday that Joynes was sleeping with another student.
"The case was then adjourned to await the rest of the trial but, it turned out that Ms Joynes had been in a fairly long-term s3xual relationship with another of her 15-year-old pupils,” Mr Allman said.
"In due course (Boy B) gave his own account. He said Ms Joynes was his teacher, that they were in contact while she was suspended and that he went to her flat when he was 15.
"They kissed and then after he turned 16 they struck up a full s3xual relationship from which she ended up pregnant to his very great shock because she had told him she couldn't get pregnant because she had polycystic ovary syndrome.
"So remarkably and, in all honesty quite brazenly, this was all happening while Ms Joynes was on bail to this court. Of course she can't deny that s3xual relationship because she became pregnant with (Boy B's) child and she had (Boy B's) child.
"Instead this time she claims the s3xual activity didn't start until he was over 16 and she had been finally dismissed from the school."
Boy A told police that Joynes had given him 10 of the 11 digits of her phone number and "challenged him" to guess the remaining digit. Mr Allman told the court. She went on to suggest he stay over at her flat, said Boy A, who "at first thought she was joking", the court was told.
Joynes picked him up near to his home in her white Audi, said Mr Allman. The prosecutor said: "She then drove him back to Manchester and took him to the Trafford Centre where they went to the Gucci stand at Selfridges and she told him he could pick a belt."
They arrived at her apartment at Salford Quays in the early evening where they sat on the sofa and then went on to the bedroom where they stripped naked and had s3xual intercourse, the court was told.
The defendant told Boy A several times that "no-one better find out", according to a statement he later made to police, the jury was told. The pair later had s3x again, he said, and by this point he was "pretty confused" and told two friends on Snapchat about what had taken place, the court heard.
Mr Allman said that "a rumour began to circulate" over the weekend after one or both of the friends "somewhat predictably" told others. An anonymous tip-off to Childline also followed as police visited the school the following week, the court was told.
Both communicated via Snapchat and the messages were largely irretrievable, but one was recovered from Joynes containing a heart and three kisses, the prosecutor said.
The court heard that Boy B had told police he was aware that Joynes was suspended when he met her at her flat and they kissed when he was aged 15.
Joynes was also said to have sent him a photograph of her bum with her only wearing knickers, the court heard. Boy B said Joynes later revealed she was pregnant by him and she presented a Victoria's Secret scratchcard with s3xual fantasies to act on, the jury heard.
The teenager said Joynes scattered rose petals in the flat for the "date night", ordered a food delivery from Pizza Express, and left a "trail of surprises" with the last being a baby grow with the words "I love my daddy," the court was told.
Boy B said that Joynes was "very jealous and controlling of him", the jury heard. Joynes denies two counts of s3xual activity with Boy A, two counts of s3xual activity with Boy B and two counts of s3xual activity with Boy B while being a person in a position of trust.
The two-week trial continues on Wednesday.