"I love you?"
How do you say "I love you" as in love for a dear friend?
It could be "Te quiero", or "Te quiero mucho/muchísimo", it's a good way to do it, as Blanca_Gonzalez Said, usually "te amo" isn't used a lot here in latin america, you just use it when you are deeply in love with someone, "Te quiero" it's usually used when you are knowing to each other, having crushes or something.
Te quiero. In Spain we hardly ever use the verb "amar" and prefer to use "querer" instead. In America it's different.
"Te quiero" is for everyone.
"Te amo" is for spouses, direct family ( i.e. mother daughter), and realy close friends.
I use "te amo" and "te quiero" with my wife and only "te quiero" with my stepdaughter.
Here's another great SD link for this: