Fathwa, - Is my non-Muslim father mahram for me?

Question:
My father is not Muslim, my parents got separated and then my mother
became Muslim. Since then they didn't have contact, may I consider him
my mahram? May I take off the hijab in front of him and kiss him?
Answer:
You may consider your non-Muslim father as your Mahram, thus uncover
(parts of the body that can be exposed in front Mahrams) in front of
him.
Imam al-Kasani (Allah have mercy on him) states:
�A Mahram is one with whom marriage is permanently unlawful� whether
this Mahram is a free person or a slave, for slavery is not contrary
to close relationship (mahramiyya), and whether he is a Muslim, a
non-Muslim or an atheist (mushrik), for a non-Muslim Mahram normally
safeguards her, except that he is a fire worshipper, for he considers
marriage with her to be permissible.� (Bada�i al-Sana�i, 2/124)
However, if there is a fear of temptation (fitna) on either side or
you fear that by kissing him, he will have evil thoughts and desires,
you must avoid uncovering in front of him and kissing him. The jurists
(fuqaha) have stated that, covering becomes necessary even in front of
Mahrams if there is a fear of Fitna or desire.
Today we live in a time where sexual impropriety is becoming common in
non-Muslims, thus one must be careful. If your non-Muslim father is
old or you feel that he will have no evil thoughts, then it would be
permitted to remove your Hijab in front of him and kiss him.
And Allah knows best