By Mark Jefferies Rita Ora and Jonathan Ross have lifted the mask to reveal their close friendship on and off the set of ITV hit The Masked Singer. Despite their age gap, singer Rita, 33, says presenter Jonathan, 63, has been her mentor since she started out in the industry more than a decade ago. She said: “Me and Jonathan just have the same sense of humour. Jonathan’s always been there for me since the beginning of my career and he’s been such a great influence on me. I think with that comes this lightheartedness between us, along with a level of trust. It feels really nice to have somebody …