Some men don't have a romantic bone in their bodies.
Is he a caring, considerate sort of chap? Or is he selfish, thoughtless and does he take you for granted?
When I was still with my lying, cheating scuzzy ex I got endless texts declaring undying love for every day that we were together. He was tactile, loving and affectionate but he still betrayed me at the end of the day.
I'd rather have less declarations of love and more trust and dependability.
Don't judge your guy by Valentine's Day alone, judge him by the guy he is every other day of the year.
Oh and I wouldn't want to burst any bubbles but the majority of guys do the Valentine's thing not because they feel particularly romantically inclined that day, but because they'd rather lob out some cash than face the consequences of not doing anything at all ;)