What are you hoping to do ?
Doesn't the message reveal whether or not it was sent from your phone?
Is there any reason you need to do anything?
Unless he is threatening to act against you.
But how could she have done that unless she has access to your phone?
Ok. Then it is not possible.
The only way she could have sent a text from your number is ***** she either had access to your phone or your sim card in another phone.
Otherwise it cannot be done.
It could be done from a withheld number or a public phone box but she could not have used your number to send herself a text unless she used your phone or your sim card in another phone.
If she doesn't have either of those two then she cannot have a text from you.
That said, one single text would not lead to any action being taken normally unless it literally contained a threat to kill or something similar.
Can I clarify anything for you?
Yes, she could have done that but it would still be revealed that it didn't come from your number.
One would not normally look at the number but if you explain to him that he should do so then it is likely that he would.
Well, if she refuses to show it to him then there are inferences to be drawn.
He should be running for the hills himself before she accuses him of sexual offences or domestic violence.
Yes, these accusers are always the same. A danger to everybody around them.
If she has deleted the text then offer to show him your phone.
Or show him your itemised bill which should not record a text.
All the best.
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