I'm assuming that by 'pipe operator' you mean the semantics, not specifically '|'. Of the programming languages I've used F# ('|>', https://camilotk.github.io/fsharp-by-example/chapters/pipe/), Elixir ('|>', https://elixirschool.com/en/lessons/basics/pipe_operator), and Clojure ('->' and '->>', https://clojure.org/guides/threading_macros), have pipe operators. The last two implement them as macros.
Aside of mentioned above languages, many others have similar concept but does not use any particular operator, e.g.:
C# - LINQ https://learn.microsoft.com/en-us/dotnet/csharp/linq/
Java - Streams https://docs.oracle.com/en/java/javase/24/docs/api/java.base...
Rust - Iterator trait https://doc.rust-lang.org/std/iter/trait.Iterator.html
I put birthday of my friends in calendar, so I remember to call them/exceptionally write them on birthday. I don't hesitate to contact them even if someone forgets about mine birthday and this is the only way so I can keep contact with so many friends when you both are quite busy with everyday duties. I know that this might sound odd and artificial for you at your age, but it is very easy to lose some people with moves or once one of you are busy with newborn children or work.
And little thought about relationship, assuming that you thread it seriously, you and your chosen one should be prepared for the worst than can happen do you two and you need to start practice on small problems, so you can go trough huge problems you may encounter. So I really recommend to work on yourselves or rethinking the relationship if minor problems cause quarrels between you two.