It was heavily implied that Montemayor shared a sexual relationship with De Santa, as seen by their interactions in cutscenes and the dialogue between Marston and other characters.
Quique can be seen serving De Santa drinks in the introduction of several missions, or helping De Santa bring girls to Allende. Montemayor likely met the same fate as his employers, execution or imprisonment by Reyes' Rebels.
|“||Dale, que ustedes son putes y lo saben!||„|
- Red Dead Redemption
- His first name, Quique, is the diminutive form of Enrique.