How can i save my relationship?

my name is hannah. and i am 15 years old, and my boyfriend is turning 16 next week,and we have been going out for about a year now, and well lately we have been having some problems. he just does not seem to love me as much as he usted to, we have been getting into more arguments, and we dont talk as much as we usted too, all we ever do is the 'phyical stuff' if you know what i mean, **not , just everything else** and i dont want our relationship to only be ual, there is no more wooing or anything like that, i dont think he 'wants' me any more, what can i do to save out relatiopnship? i love him, and i dont want this to end...i need help!