The victim alleges that Jenas initially followed her on Instagram before lewd direct messages began being sent. His first message is said to have asked for a kiss "to fill some time".
She added: "Soon after that message and the video I had to go in to do a touch up for him to go on-air. He whispered to me 'did you see my messages' and I just said 'yes', as in 'I'd seen them, not interested,' and just carried on working. That was it that day. Then the next day it must have been his birthday, and he texted me 'can I have a birthday kiss tonight please, our secret'.
"Then he sent me another one. After that I said 'Look, I'm in a relationship…I'm not interested."
She eventually informed her boyfriend, who advised her to tell her boss, which she did; her line manager did not alert BT Sport's management to Jenas' behaviour.