Here's another love letter that I've prepared for you and you can use it to surprise your lover anytime you feel like it...
Although you can simply print out the love letter below, my suggestion is that you copy it out on a beautifully designed card or paper. It actually shows your love and sincerity when you give your loved one a handwritten piece of letter instead of a printed copy.
Also, you could change out some wordings to suit your situation, for instance, in the last paragraph, I mentioned "On this Valentine's Day...". If you're not giving this to your lover on Valentine's Day, you'll want to switch that out with "On this Wedding Anniversary..." or simply "On this day..." to fit the occasion.
Hope you find it useful!
To your happiness!