Why doesn't he go down on ME?

it seems like hes using you.....my boyfriend does everything to him...and dont do anything for him...i mean he just cares about pleasuring me...bt ya maybe its what u eat i no if u eat fruit its apost to make it taste better idk if thats just for guys are what...if you want him to do something for you try asking for exchange like if i do this for you you do this for me....idk