I cannot iMessage my Spouse but anyone else works. Bout iPhone 6 IOS up to date. Tried turning everything off and on no help. Re-boot; no help

Hello Tedkark,

Thanks for using Apple Support Communities.

If you're unable to to send a message to a specific contact on your iPhone, then I recommend following the information outlined below.

Delete existing conversations

If you can't send messages to a certain recipient, delete any conversations you have with them and try sending a new message. When you delete a conversation, you won’t be able to recover it. Make sure that you take a screenshot or forward any messages that you want to keep.

If you can't send or receive messages on your iPhone, iPad, or iPod touch - Apple Support

Take care.