A:  Unless you have the legal grounds, filing a case in court is a useless exercise and can drain your hard-earned income.  In annulment of marriage, the Family Code of the Philippines demands exclusive grounds that justify legal relief, and these include:

(a)    Lack of Parental Consent. That the party in whose behalf it is sought to have the marriage annulled was eighteen years of age or over but below twenty-one, and the marriage was solemnized without the consent of the parents, guardian or person having substitute parental authority over the party, in that order, unless after attaining the age of twenty-one, such party freely cohabited with the other and both lived together as husband and wife;

(b)   Unsound Mind. That either party was of unsound mind, unless such party after coming to reason, freely cohabited with the other as husband and wife;

(c)    Fraud. That the consent of either party was obtained by fraud, unless such party afterwards, with full knowledge of the facts constituting the fraud, freely cohabited with the other as husband and wife;

(d)   Consent not freely given. That the consent of either party was obtained by force, intimidation or undue influence, unless the same having disappeared or ceased, such party thereafter freely cohabited with the other as husband and wife;

(e)    Physical incapacity. That either party was physically incapable of consummating the marriage with the other, and such incapacity continues and appears to be incurable; or

(f)     Sexually transmissible disease. That either party was afflicted with a sexually-transmissible disease found to be serious and appears to be incurable. (Article 45, Family Code of the Philippines)

(g)   Psychological incapacity. A marriage contracted by any party who, at the time of the celebration, was psychologically incapacitated to comply with the essential marital obligations of marriage, shall likewise be void even if such incapacity becomes manifest only after its solemnization.

If one of the grounds abovementioned is present in your case, the next challenge is the filing of case in court.  One does not expect that once the case is filed in court, the wheels of justice will take its course and reach its destination without the appearance of the petitioner or aggrieved party.  The latter has to make a personal appearance to testify and be examined. This is a requirement in due process.