True, he's only 10 in ANGEL age but in human age he's wayyyy older than us. He once said "I started making cakes 300 years ago! I'm still an amateur!" (Something like that) and he also said when Lucifer was an angel, he admired him more than michael. That means Luke was already born when Lucifer was an angel?! (And it was a lonnngg long time ago, something we humans can't imagine, like Luke said himself). But still, us looking at Luke in a romantic way is way too wierd for me and i'd rather that mc and Luke have a parent and child relationship.