Valentines day is about love exactly. I hate that day when I`m single. But than I realise that I`m not alone, `cause I`m never alone, friend are with me, and not me is the only people who is alone at that day. `cause I`m always alone at that day, it follows that i hate it, but I like jokes about valentines day.
 Here is one :)

Roger, who was 19 years old, was buying an expensive bracelet, to surprise his girlfriend on Valentine's Day, at a very smart jeweller's shop in Hatton Garden, London.

The jeweller inquired, 'Would you like your girlfriend's name engraved on it?'

Roger thought for a moment, grinned, then answered, 'No, instead engrave "To my one and only love".'
The jeweller smiled and said, 'Yes, sir; how very romantic of you.'

Roger retorted with a glint in his eye, 'Not exactly romantic, but very practical. This way, if we break up, I can use it again.' 

So I think I have told everything what I want about it. :D there is no more to specify what...

 love is a nice thing, but if you have a relationship you have to love your partner every day, not just in that one, and if you are a real gentleman you will surprise her with a rose every day, not just when Valentines Day is.