The following excerpt from THE SIXTH BOOK, Chapter XXVII of the S'rîmad Devî Bhâgawatam clarifies that Narada married Damayantî.
Nârada said :-- On hearing the words of her daughter Damayantî, that unblameable pure queen knowing her attachment deep towards me, spoke to the King thus :-- “O King! Now celebrate in an auspicious day and on an auspicious moment the auspicious marriage of Damayantî; the daughter has said that she has already selected Nârada as her bridegroom and it cannot be other-wise.” Thus prompted by the queen, the King S’anjaya performed the marriage ceremony of her daughter in accordance with due rites and customs and in an exceedingly becoming manner. O Risi! Thus I entered into the married life and remained there though my heart constantly burned with the thought of my monkey-face. Whenever the princess used to come to me for my service, I used to get tormented with the remembrance of my monkey-face; but her face beamed with gladness whenever she saw me; never she became sorry nor dejected, even for a moment, to see my face monkey-like. Thus time passed on. One day the Muni Parvata suddenly came there, after making his sojourn to many places of pilgrimages. I showed him a great respect and gladly loved him and greeted him duly; he got himself seated in an excellent Âsana and became very sorry to see me. I am his uncle and have entered into a married life; my face has become monkey-like. Therefore I am very much depressed in spirits and worried with the sad thought and has become lean and thin. Seeing this he was overwhelmed with pity. He then said :-- “O Muni! The curse that I cast on you before out of my anger, I now withdraw. Hear. O Maharsi! Let your face be by my merits, again as good as it was before; I now feel pity for the daughter of the King.”
Is it true that Narada is brahmachari? If no, then why is he called so if he is already married?
Note: The question marked as duplicate says in general. In order to validate it for Narada, there is a need to show that he follows that. So, please provide statements regarding the brahmacharya of Narada. Because, otherise, we can consider all gods such as siva, Brahma etc., as brahmacharis.