Well, yeah. You said it in a lamen way (which isn't meant to be an insult; I don't expect everyone to be able to be interested in psychology), but you aren't wrong. Teenagers tend to greatly exaggerate their emotions, and when we get older we usually look at our teenage "loves" with a chuckle.

But, to reitterate, the difference in those types of love is mostly, if not entirely, qualitative, not quantitative.