Praise be to Allaah.
You are asking about the ruling on your celebrating this
occasion; why did you not ask about the ruling on your “romantic”
relationship with a girl who is a non-mahram to you?!
This is what is basically wrong in your situation, this
haraam relationship with a girl who is a non-mahram to you. Your
relationship with her will remain haraam unless she becomes your wife. So it
is not permissible for you to be alone with her, or to spend time with her,
or to look at her, or to enjoy talking to her, because she is a non-mahram
to you. Fear Allah with regard to yourself and your religious commitment; do
not betray yourself on the basis of illusions of joy and blessing!
What joy, what blessings can there be when you and this girl
are disobeying Allah?!
See the answer to questions number
47405 and
59907, as well as the section
on relationships between the sexes on this website, in which you will find a
lot of answers about that.
Once you know that this romantic relationship with a girl who
is a non-mahram is a relationship which is haraam from the outset, then
everything that is based on falsehood is also falsehood.
We would go further and say: If the love relationship that
you are speaking about was with a permissible wife, then celebrating this
day that you are asking about would be reprehensible innovation. We have no
Eids except Eid al-Fitr and Eid al-Adha, and our weekly ‘Eid, which is
Jumu‘ah.
Keep yourself busy, instead of celebrating love, by hastening
to get married, if you are in love with her and she is suitable to be a
Muslim wife to you who will adhere to the commands of Allah with you.
We ask Allah to keep us and you safe from temptation, both
apparent and hidden.
For more information on celebrating Valentines Day, please
see the answer to question number
73007.
And Allah knows best.