Praise be to Allaah.Firstly:

Valentine’s Day is a jaahili Roman festival, which continued to be celebrated until after the Romans became Christian. This festival became connected with the saint known as Valentine who was sentenced to death on 14 February 270 CE. The kuffaar still celebrate this festival, during which immorality and evil are practised widely.

Secondly:

It is not permissible for a Muslim to celebrate any of the festivals of the kuffaar, because festivals come under the heading of shar’i issues which are to be based on the sound texts.

Shaykh al-Islam Ibn Taymiyah (may Allaah have mercy on him) said: Festivals are part of sharee’ah, clear way and rituals of which Allaah says (interpretation of the meaning):

“To each among you, We have prescribed a law and a clear way”

[al-Maa’idah 5:48]

“For every nation We have ordained religious ceremonies which they must follow”

[al-Hajj 22:67]

-- such as the qiblah (direction faced in prayer), prayer and fasting. There is no difference between their participating in the festival and their participating in all other rituals. Joining in fully with the festival is joining in with kufr, and joining in with some of its minor issues is joining in with some of the branches of kufr. Indeed, festivals are one of the most unique features that distinguish various religions and among their most prominent symbols, so joining in with them is joining in with the most characteristic and prominent symbols of kufr. No doubt joining in with this may lead to complete kufr.

Partially joining in, at the very least, is disobedience and sin. This was indicated by the Prophet (peace and blessings of Allaah be upon him) when he said: “Every people has its festival and this is our festival.” This is worse than joining them in wearing the zinaar (a garment that was worn only by ahl al-dhimmah) and other characteristics of theirs, for those characteristics are man-made and are not part of their religion, rather the purpose behind them is simply to distinguish between a Muslim and a kaafir. As for the festival and its rituals, this is part of the religion which is cursed along with its followers, so joining in with it is joining in with something that is a cause of incurring the wrath and punishment of Allaah. End quote from Iqtida’ al-Siraat al-Mustaqeem (1/207).

He also said (may Allaah have mercy on him): It is not permissible for the Muslims to imitate them in anything that is uniquely a part of their festivals, whether it be food, clothing, bathing, lighting fires, refraining from a regular habit, doing acts of worship or anything else. It is not permissible to give a feast or to give gifts, or to sell anything that will help them to do that for that purpose, or to allow children and others to play games that are part of the festivals, or to wear one’s adornments.

To conclude: the Mulsims should not do any of their rituals at the time of their festivals; rather the day of their festival should be like any other day for the Muslims. The Muslims should not do anything specific in imitation of them. End quote from Majmoo al-Fataawa (25/329).

Al-Haafiz al-Dhahabi (may Allaah have mercy on him) said: If the Christians have a festival, and the Jews have a festival, it is only for them, so no Muslim should join them in that, just as no Muslim should join them in their religion or their direction of prayer. End quote from Tashabbuh al-Khasees bi Ahl al-Khamees, published in Majallat al-Hikmah (4/193)

The hadeeth to which Shaykh al-Islam Ibn Taymiyah referred was narrated by al-Bukhaari (952) and Muslim (892) from ‘Aa’ishah (may Allaah be pleased with her) who said: Abu Bakr came in and there were two young girls of the Ansaar with me who were singing about what had happened to the Ansaar on the day of Bu’aath. She said: And they were not (professional) singing girls. Abu Bakr said: “Musical instruments of the shaytaan in the house of the Messenger of Allaah (peace and blessings of Allaah be ...