sometimes people get so emotional and cant control how they behave its silly a fight is a fight it does not overlap all the good things that you have. some teqnuiqes:
Dont place blame we naturally have a blame detector and when that alarm goes off the other person becomes defensive and well they stop listening.
take some time and learn whne to stop, sometimes things escalate and then things just go downward from there my suggestion spoon this works even if you are at your maddest spoon with clothes on however, you will feel that the communication lines open quickly,
always aknowlage your partner
accept them, this is a hard one
& appreciate them

Good book to read communication miracles for couples

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It takes a minute to have a crush on someone, an hour to like someone, a day to love someone - but it takes a lifetime to forget someone"

People change and forget to tell each other.