im 19...and im been honest..yet sweet...i mean i know i want to be with her...but she is very rebel in a lot of things...and...only time will tell..am i suposte to know that in 1 year im marrying her?..idk dude..that happens..i feel that way...but i feel im to young
But you aren't supposed to say it. Just let her go on her way thinking everything is wonderful and all 'ment to be' and BS. Neither break her down nor build her up, both lead to trouble. Just become as non-commental and non-commiting as possible. The best answer for what happened (at least, as I see it) was to say the 'I love you too' and then change the topic, and change it to something she likes (shoes, clothes, celebrity gossip, or whatever the hell she's into). The point is, say as little as you can and then change the damn topic before she goes fishing for more!
At least, that's how I'd have handled it.