TELL HIM!! if u wait 2 long, u will regret it. u should just say it casually and see wat he sayz, u should say it after he does somthing rlly sweet just be like "awww ur so sweet i am so lucky i have u, i love u" and just make it totaly casual, so he doesnt feel presured......or u coul just say flat out, "i just wanted 2 tell u that i love u" nd then see wat he does (pay attention 2 body language) and thn take it from ther, just remember the last thing u want 2 do, is make him uncomfortable, or pressured.....goooood luck!!!