Take him to the movies to see a sweet little movie and say "babe I just wanted to let you know, I love you so much "
Wait for him to tell you - I don't know that's just what I feel more comfortable with...
It all depends... if you know or can tell that he wants to say it go for it.... and if that don't work what's the worst you could get back... "I don't know about that".... At least go for it girl if you are SURE you love him... make your move... peace
When you can't NOT say it, go ahead and say it. Just don't get pissed off if he isn't ready to say it back. Just cause he's not ready to say it, doesn't mean you aren't headed that way.