Why even say ''my beautiful wife'' if you're never going to marry her?

If there is a phrase I hate the most is that one. That's one of the many my ex boyfriend used to say. Eventually I found out everything was a lie and blocked him.

Why keep her with promises and even go all the way to call her ''my beautiful wife'' if you're never going to marry her? You were never going to propose... why do you do that her?

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No, she's not your beautiful wife, she's not a family member, she's just your childless girlfriend you can dump any moment without, she's just your comfort zone... yeah just a girlfriend that you can always have one foot out the door any moment, easily replaceable without any issues. What does she gained out of all that? NOTHING
Why even say ''my beautiful wife'' if you're never going to marry her?
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