All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
Hence came the laws of the revealed way to achieve this, and it prevents the guardian from forcing the woman under his guardianship to marry someone whom she does not like. If the contract has been concluded, then it conditional to the woman's approval of it. We have already clarified this in Fatwa 107785. Therefore, if the marriage contract was conducted without your consent, then you have the right to seek Faskh (marriage annulment).
However, if this young man is religious and of good moral character, then we recommend that you accept him as a husband, as doing so would be kind and dutiful to your parents, and Allaah may bless you both in this marriage and rectify your marital relationship and open doors of provision for you because of this marriage as the treasures of the earth are in the hands of Allaah. Allaah says (what means): {And there is not a thing but that with Us are its depositories, and We do not send it down except according to a known measure.} [Quran 15:21]
Dear sister, homes are not built on love alone as ‘Umar said. If you are patient at the beginning and try to have a good marital relationship with him, Allaah may make this a cause for continuous love between the two of you.
Finally, we remind you that the best act of kindness to your father is to supplicate Allaah to guide him and enable him to repent, and you should take the initiative to set him right by advising him, even by seeking the help of some righteous and pious people, as Allaah may guide him through you. The Prophet said: “I swear by Allaah! If Allaah guides one single man by your efforts, that will be better for you than possessing an abundant number of red camels (a very expensive breed of camels which was considered as the most valuable property to Arabs).” [Al-Bukhari and Muslim]
For more benefit, please refer to Fatwa 21794.
Allaah Knows best.