Boyfriend..

I have been with my boyfriend for nearly a year now, he is my first love im 17 hes 19 at the start everything was great he was so nice constantly ringing texting kissing me etc. Just after Christmas everything started to go downhill i now only see him twice a week he moans if i want to see him more he says im too clingy? he never kisses me anymore hugs me or anything. I asked him straight did he love me and he said yes so so if your really loved somebody why would you do this to them?. Every time i moan at him for never being affection anymore he calls me crazy. It hurts because part of me wants to split up with him but then hes my first love and feel like i couldn't live without him its killing me the way he is treating me, i just want everything to be perfect again!