There are many important things to focus on in a relationship. No two are the same. How it begins and how it ends will always be up to you and the person you are with. The same thing applies to your different relationships. Different friends serve different functions and that is perfectly ok and even normal. You have certain interests that connect you with one person and likely different interests that connect you with another.
Diversity is healthy. It is nice to share different experiences with different people. Perhaps you are in love with someone who is not a fan of video games. That is ok. You don’t have to have all the same hobbies and interests as your significant other. In fact, it is pretty rare if you do and if that is the case, more power to you. It is nice to shake things up a bit and the same goes for them as well. It also gives you something different to talk about over your next meal together. It is important that you keep the communication flowing in order to minimize confusion and maximize the connection.
A lot of this concept has to do with not judging your relationships by the standards of others, but the difference here is that I am including your own past relationships as well. There may have been things about previous relationships that you loved and miss, but it is important to remember that the past needs to stay in the past. Relationships are ever evolving and it is important that you are able to adapt to the changes. Things that worked with a past significant other may not work with the current. That is ok. The only constant in life is change.