For people who are in relationships or seeing someone regularly, it is a good idea for you to consider how the habits of your partner are impacting your life. If your partner has healthy habits and they are acting in a way that you are in agreement and alignment with, then it is a good idea for you to maintain those aspects of the relationship. If they are serving you, there is no reason to not engage with them! For example, if your partner is using smart drugs and nootropics, there are a few different ways that you can react.
The first thing that you can do is make sure that you are checking up on their philosophy to see what they are trying to achieve and how it is being done. This way you understand what they are doing first so you can even better determine whether it is something you also want to try. If your partner has different goals than you, there is no reason to simply take the smart drugs that they are enjoying. You can do far more instead.
Assuming they are using the smart drugs responsibly, it is a good idea for you to enhance your own cognitive function if it is easily accessible and you can understand what it is that your partner is doing. Most of the time, people have a hard time understanding these facts, which causes a lot of problems. If you pay attention to your dosage and why you are doing things, then you should be fine.
The most important thing to do is be supportive of your partner even if you do not agree. After all, even if you think they are abusing their body, it is important you bring up the topic in a loving and supportive way.