Today it is my daughter's boyfriends' birthday. So I texted him a HB message this morning. About an hour later I get an indicator on my phone saying he is calling me. I answer there is a woman on the other end who says she has received a text from me wishing her son happy birthday I say oh no I must have sent it to the wrong number as it is my son in law's birthday. I just thought it would be easier to say SIL rather than the actual relationship. She then asks who I am - I give a false name (at this point it suddenley dawns on me this daughter's BFs mother. I then start digging an even bigger hole when she asks his surname and I give another false name. She then goes on about what a coincidence as it is her son's birthday too, but he isn't married and doesn't live at home. I obviously texted his old home number ! I then try and get off phone asap. I have deleted the HB message and think I will deny ever contacting him today.