There was a priest that did all the rituals for the marriage in 4th century.
He was well known and all that.
The king (don't remember the name) of rome in 4th century believed that
when the mens get married they would become weaker.
But because the king wanted his men to stay strong he made a law
forbidding people to get married at certain age to cetain age.
But the priest didn't care and still did the rituals for the marriage.
When the king found out that the priest was doing the marriage ritual,
the king became ridiculously mad and put the priest in jail.
When the priest was in jail, he fell in love with the prison guard's
daughter. He couldn't say something to her, so he wrote her
her a letter with "from your Valentine". Because of that until now we
celebrate Valentine's Day.