Because I found a copy of Lord of the Rings (the 4 disc set without all the extra crap) hidden behind something just as we were closing. He took it with him up to the check outs, said thanks, you rock, kick ass.... then as he was walking past a price scanner he double checked that it was the right one and turned around and yelled "I LOVE YOU!" down the aisle at me. His friend turned around and giggled.
Hehe... happy geeky boys are so cute sometimes.