For the past 4 days I've been unable to send text messages to one person. I've tried restarting the phone, clearing the cache, ensuring I'm in an area with sufficient reception. Everything else is working fine. I can make calls and text other people.
The one person I can't text is my husband!!
Any ideas please?!
Chances are that he has (accidentally) blocked your number.
Ask him to check the spam settings in his message app.
Is the message saying delivered, sent or failed on your phone @Tambelina ?
Another thought.... can he receive texts from others?
There are some other things to check here Guide: Text Message Tips (not sent or received)
Both of you should check the tips but it does sound like an issue more likely with your husbands phone.
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