Following a post at the British Royal MB I just realized that Maria Cristina's wedding to Agustin Muñoz occurred on December 28th 1833.

Fernando VII had died just 3 months earlier on September 29th.

Was there anything rolling on between the Queen and Agustin during Fernando's life ?

When/how did M-C and Augustin met ?

Odd the hurry to marry just 3 months after your husband's death .
And no need for a hasty wedding as their 1 st child was born in November 1834 , 11 months after her parents wedding