How long did it take you to say "I love you" ?

 I'm 16, and I've always been one of those girls who are against falling in love as a teen, but now I'm turning into one of those girls who fall in love. I've been in a relationship with my boyfriend for 9 months, and I still haven't said it. He said it to me after 2, and I told him I wasn't ready for it. Our relationship evolved. We've been through the worst fights and so much crap together, and somehow managed to get through it. We used to hang out just to make out or do stuff, but now, I'm happy just being with him just talking. I'm starting to crave him, but not sexually...I crave being near him just to be with him..just to talk or hangout. I used to be so infatuated with him but now it's different. The thing is, I'm still so against falling in love while in high school, and it's making me question whether or not I actually love him. 
​How long did it take you to say I love you?