One of the most popular Jewish books on relationships is called "Two Halves of a Whole".
So, which one of these is the Torah perspective?
Both are.
You have to be whole for yourself before you can share yourself with anyone else.
Also, you shouldn't be with someone who doesn't make you feel "fuller" or "completer" when you are with them.
I like to say it this way:
Two halves of a whole can still be whole unto themselves. It is like this:
Coffee is good by itself. Milk is good by itself. Coffee with milk is just better. They each make each other better as they are now a completed, perfected unit.
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