So what's the deal with this day for secular people? Have the jews transformed the martyrdom of a Saint to consumerism and sin? How do traditional Catholics celebrate this day?

Not sure how this is related to the beautiful red roses my DH of 58 years just brought to me, but I found this:

Click Here for St. Valentine Prayer's

Saint Valentine, officially known as Saint Valentine of Rome, is a third-century Roman saint widely celebrated on February 14 and commonly associated with "courtly love."
Although not much of St. Valentine's life is reliably known, and whether or not the stories involve two different saints by the same name is also not officially decided, it is highly agreed that St. Valentine was martyred and then buried on the Via Flaminia to the north of Rome.
In 1969, the Roman Catholic Church removed St. Valentine from the General Roman Calendar, because so little is known about him. However, the church still recognizes him as a saint, listing him in the February 14 spot of Roman Martyrolgy.
The legends attributed to the mysterious saint are as inconsistent as the actual identification of the man.
One common story about St. Valentine is that in one point of his life, as the former Bishop of Terni, Narnia and Amelia, he was on house arrest with Judge Asterius. While discussing religion and faith with the Judge, Valentine pledged the validity of Jesus. The judge immediately put Valentine and his faith to the test.
St. Valentine was presented with the judge's blind daughter and told to restore her sight. If he succeeded, the judge vowed to do anything for Valentine. Placing his hands onto her eyes, Valentine restored the child's vision.
Judge Asterius was humbled and obeyed Valentine's requests. Asterius broke all the idols around his house, fasted for three days and became baptized, along with his family and entire 44 member household. The now faithful judge then freed all of his Christian inmates.
St. Valentine was later arrested again for continuing to try to convert people to Christianity. He was sent to Rome under the emperor Claudius Gothicus (Claudius II). According to the popular hagiographical identity, and what is believed to be the first representation of St. Valentine, the Nuremberg Chronicle, St. Valentine was a Roman priest martyred during Claudius' reign. The story tells that St. Valentine was imprisoned for marrying Christian couples and aiding Christians being persecuted by Claudius in Rome. Both acts were considered serious crimes. A relationship between the saint and emperor began to grow, until Valentine attempted to convince Claudius of Christianity. Claudius became raged and sentenced Valentine to death, commanding him to renounce his faith or be beaten with clubs and beheaded.
St. Valentine refused to renounce his faith and Christianity and was executed outside the Flaminian Gate on February 14, 269. However, other tales of St. Valentine's life claim he was executed either in the year 269, 270, 273 or 280. Other depictions of St. Valentine's arrests tell that he secretly married couples so husbands wouldn't have to go to war. Another variation of the legend of St. Valentine says he refused to sacrifice to pagan gods, was imprisoned and while imprisoned he healed the jailer's blind daughter. On the day of his execution, he left the girl a note signed, "Your Valentine."

Don't they do that with every Catholic feast or holy day? Turn it into a orgy of lust, partying and merchendizing, especially Christmas and Easter.
But, oh, lets keep Passover holy.

20 years ago I saw a 20 foot tall bunny rabbit statue smack in the middle of a large shopping Centre , Polo Park. So the tiny children see this huge bunny, they beleive that this must be a god, they are told lies that this is what Easter is all about, and grow up little pagans. Of course all public schools repeat this ad nauseam. There is an agenda to destroy anything religious or God-centered. As you say, Christmas, the REAL Christmas is taboo: Oh Happy holidays, but where is Jesus on His birthday? Catholic carols are not heard very much, and humanity is unhappy..Just what the Kommoonists want! Destroy the youth, wait a generation and voila! society is rotten: slaves of satan. 
St. Valentine, pray for us+