I'm tired of my bf penis...HELP

I have been with my boyfriend for a year and this is the longest time I've ever slept with the same person. I'm concerned because the sex is monotonous and I'm getting kind of bored. I'm VERY kinky but my boyfriend is more on the vanilla side. We've talked about it and he's open to everything I'm into but we never implement it. (We're not open so I'm not sleeping with anyone else, and I'm not going to cheat)