How can i tell? ?

well i like this guy and i cant tell if he like me can you tell me if it sounds like he does. so we talk every day at school and during lunch. he cant remember my last name,he cant remember what church i go to, he cant remember my middle name, he cant remember alot about me even though i tell him all the time and he also likes talking to me i think you know how girls can tell stuff when their aroung a guy well i kind of fell like he trys to ignore me when ever its lunch time he doestnt find me i have to find him. does he like me i fell like sometimes he likes me and other times i fell like he doesnt what should i do. i think its cause i call him alot except his phone allways on silent so he never answers so when he looks at his phone and sees ive called him like 15 times does that mean he thinks i like him so hes trying to be a to hard to get kind of guy or what i really need to know if he likes me???HELP!!! he has ADD i know that. but he is a very smart kid he has never gotten below a B. so i get the felling like he wants me to think he has forgoten just so that i dont think he like me. So im going up adown not knowing if he likes me or not. What does this mean.Mabe you can tell me how to flirt. and when i was talking to him on the phone yesterday and he said he had to go he said il talk to you tommorow i think that means he acctually wants to talk to me, i allways thought he didnt want to.