Digits

So the other day my son came home with a a big smile on his face. He was so proud of himself. Mind you he's only in 3rd grade. Anyway, he got in the car and said "Guess what!!?" "I got Naomi's digits!!" Apparently she gave her phone number to him first, and then he gave her his. This was a couple of weeks ago now, and no phone calls have been made either way. I did ask him the other day what he did with her number, and unfortunately it's lost. I told him maybe he should tell her he misplaced it and ask for it again. Wait, what? He's in 3rd grade! Is this normal? I still thought boys had coodies at that age.