I thought it was the opposite. I think it happened to the one who was explaining it to him and that they are fated pairs. Why else would he get so many nose bleeds.
Hmm, to me it sounded more like Kaoru hoped they were fated pairs and even believes it, but that the story of the nurse pretty much tells us that we don't know what will happen in the future so there's always a possibility that they aren't fated pairs.
They had that conversation after the results, and he was asking sensei for advice cuz he feared that Yuka was not his fated pair and he wanted to know if he had a possibilty to be with Yuka cuz he loved him. But i think they are fated, this because Taiga was an alpha and was in same class as Yuka didn't notice he was an omega, he only discovered because he heard the conversation,.Kaoru only for being in the same build and when he was really close to Yuka he noticed that Yuka was an omega.
Oi wait wtf, are you telling me there's a chance they aren't fated pairs and that the black haired guy might leave the blonde one and the blonde one will be left all alone because no one wants a bitten omega? Lol wtf, way to stab me in the heart haha
*cries*