Three little words...

Ladies, I have been with my man for about 2 years and a half. I believe us to still be in the honeymoon phase, we are still head over heels for each other. Everyday we are inseparable and when we’re away for a while we miss each other like crazy. Communication is amazing, sex is great and he’s a really good guy... he just hasn’t told me he loved me yet. Is that normal? How long did it take for you s/i to say the three words? Should I be worried? Am I over thinking?