A single mum says she was left feeling “a bit ill” after discovering that her new boyfriend is her son's head teacher.

She said she'd been “texting constantly” with her new man, going on three “amazing dates” and kissing before discovering that he runs the school that her son attends.

She told Mumsnet: “Actually imagining my mum was going out with my old head teacher is making me feel a bit ill. I'VE HAD MY TOUNGE IN HIS MOUTH!”

She turned to the parenting forum for advice, asking whether there is a conflict of interest, and whether it would put anyone else off.

While some said there was nothing wrong with it, others urged caution because he'd hidden his real name from her.

She wrote: “His first name I know - his surname is not the one he uses with me or the one he has on his email.”

One mum responded: “The head teacher thing wouldn't bother me as I doubt he has much direct contact with your son.

”The different surname thing would worry me more. Has he told you the wrong surname or is it just one he has on his email/online dating account?

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“Lots of teachers don't use their names online so the kids can't find them but that doesn't fit with the Facebook profile in his real name. Hmm.”

The mum discovered her new man’s true identity when she attended a special assembly.

“A few parents were invited, me being one of them. I spotted him. Then waited until boys had filed out and I introduced myself.”

Unsure how to deal with the situation, she is taking advice from other parents on the forum and “just going to go radio silent and hide my phone.”