Soulmates Not Actually Soulmating

Howdy!

Something that I've noticed recently in the Sims 4 is that my two Sims who have achieved "soulmate" status with each other aren't actually acting as soulmates. What I mean by this is that the sims who are soulmates will still have the "Flirt" feature pop up (the suggested ones that are outside of the "Friendly", "Romance", etc. categories) when talking to other sims or, if left to their own devices, will flirt with a different sim that is not their soulmate.

I feel as though (as a monogamous person) if you've achieved a soulmate status yourself, that it wouldn't even dawn on you to flirt or hit on another person, and I think that this should be replicated in the Sims. I don't recall this happening in the Sims years back, even with the same two sims and they've got maxed-out friendship and romance.

This is just a suggestion, something that's been bothering me in the Sims, and I hope that I'm not the only person who feels this way! 

Thank you for your time!