KSig RC , you brought to light a very important point from which an excellent discussion evolved.
I DO agree the word "love" is bandied about, and as
KSigkid and others suggests, it's "definition" IS used as a cop out. So much easier to use as an excuse than being blunt-"I do NOT like you that way, I will NEVER like you that way."
Still, maybe it was due to the passions of youth, but there were two individuals in my life who I honestly FEEL I loved with all BUT my libido. Like a brother perhaps, but more like the closest friend in the world.
James-In studies of the most successful, closest couples, they are able to maintain an infatuated state continuously throughout their relationship because they have superior relationship skills. Skills as in actions. 
How many years are they talking about? After knowing my Hubby over 30 years, I really don't feel like he "infatuates" me, nor I him. Here we come full circle though and what I find funny is the fact that we ARE best friends. I love him with my WHOLE self. If the term "infatuates" means I can still "surprise" him and he me, then yes, I would agree with that statement.