Is it that bad if I make a surprise for my lover then he got nothing for me for Valentine's?

"Love seeks not it's own"...love is more about the giving than the receiving, but it is disappointing (even frustrating) when someone you love doesn't think enough to reciprocate. I wouldn't say it's a bad thing necessarily, unless they make a habit of it, people are not perfect and do get side tracked or forget. In the very least they should show some gratitude and appreciation (and a little remorse, regret, and embarrassment for their own neglect is nice too). That's why my wife and I don't believe in or celebrate Valentine's day, we can and do show and express our love EVERY day of the year and not just try to cram it into a single holiday.