sexually active

gina
im 17, gonna be 18 next month. i started birth control almost a month ago, blah blah blah. ive been with my boyfriend for 15 months, weve had sex many times but i just find myself not being all that sexual and it makes him upset and i dont like it! im never in the mood for him to go down on me(he is good at it) and i never iniciate anything. any tips on how to increase my sex drive? i really wanna be more sexual:\