Honost Question. Need Honost Answers.

Ive been with my boyfriend for almost four years now, and our sex life is just so different then what it used to be. Im attracted to him but i think im just getting bored ? Ive tried spicing things up using pure romance products and sex toys , games , even gettin drunk as hell before sex.... I dont enjoy it as much as ive used to. What should i do ? Does anyone else ever feel this way ? Its like nothing can fill this void.