I agree with this thoughtful Kiwi fully.
But I would like to add – trust your gut. Which might seem contradictory but let me explain.
If you’ve been cheated on before (not saying you have, just using that example), and you start noticing a pattern or behavior in a partner that you’ve seen in the past while being cheated on, your first instinct (if you’re like most of us) is going to be to to tell yourself you’re overreacting. No one wants to believe their partner would do that. But also, to some extent you have to protect yourself and be realistic when you start having suspicions.
Just be sure you’re not turning a blind eye to real issues in an effort to save the relationship.