Relationships take work. Over time, people will analyze and assess their relationships to figure out what kind of changes they can make to help keep things going strong or make things better. If you are at a place where you are considering ways to improve your relationship, congratulations. You are already on a good path. Spicing up your kinky sex life is always a popular choice for couples, and often it can be a good one. How do you know, though, whether or not getting a little kinky will be a good thing?
First of all, you need to talk to your partner. It doesn't matter what anyone else thinks, because if your partner isn't interested in adding kinky sex in relationship, it's not going to be relevant. Assuming that you've already discussed this with your partner, of course, then the two of you can keep reading to find out whether or not this is the right move for you.
The problem with providing a straight answer here is two-fold:
The most popular areas in the kink community include BDSM, fetish play, group sex, fantasy, and exhibitionism or voyeurism. Under these umbrellas, you can find even more specific kinks to explore, such as dom/sub relationships, spanking fetishes, threesomes, roleplaying sex, and more. This is why it is so critical to talk to your partner and make sure that you're on the same page about what you want from a kinky sex life.
You will typically figure out fairly quickly whether you're into kinky sex or not, no matter what kind of activities you actually choose to engage in. Therefore, it might not be a bad idea to go ahead and give it a try. After all, if you don't like it, you never have to do it again. If you do, you won't waste any more of your time having boring vanilla sex.
Another option, if you or your partner isn't quite ready to dive in, or even if you want to explore your kinks, is to watch porn. Either alone or together, you can use porn to explore your fantasies and kinks and share with each other what really turns you on. Even the watching porn itself can be kind of kinky for some and can be a great segue to a fun time in the sack.
What's good for your relationship isn't something that anyone else can tell you. There are many relationships that do benefit from trying a little kink, but it won't be for everyone. Have an honest conversation with your partner about what you want to explore and see what is going to be best for you. If you do decide to spice things up, you might be surprised at all the fun that you find.