I don't get many "someone has a crush on you" emails either. I got one a few months back. And if I get them I don't respond to them, given that on the off-chance that it's not a scam, it could only be some deranged obsessive person of the sort it's best to avoid.
I never get any of the good spam, like "Mortal dance in machine ambulance" porn. Instead of being titillated by "Someone has a crush on you . . .," my manhood is regularly insulted by "Someone thinks your penis needs enlarging . . ."