If you take relationships for granted and don't value them, you can lose them.
As a rule, the breakup does not happen instantly: some habits slowly but surely kill love.
If one of the spouses cannot ignore any member of the opposite sex and cannot imagine their life without flirting, then it is difficult to tolerate this.
So focus on the person you love.
Resentments accumulated during a relationship need to be worked through, not remembered and constantly used for reproaches. No one likes to hear about their wrong actions.
If you constantly remind them of them, your partner will accumulate resentment and irritation.
Sometimes it's awkward to discuss certain things, but it needs to be done. If your partner doesn't have the talent to read minds, they'll never guess that you're not happy with something.
But people who know how to discuss problems in a correct manner stay with each other for life.