we honestly have lived together most of our time of relationship, in those time also we didnt message much, because we were together so some months we literally have nothing to show, however I think we have enough as I do have covnersations from very early in the relationship all throughout, just with a few month breaks here and there, but I think our wedding and family photos and photos of us together are looking good, will also get a few plane tickets that have both of our names on too.
As larrabee said, for times when you lived together, you don't provide evidence of communication, you provide evidence of cohabitation (because they will assume that rather than emailing each other, you just looked at each other and spoke because you're both
right there ). The evidence you'd provide is official correspondence (utility bills, bank statements, letters from GP, etc.) addressed to both of you at the same address, any tenancy agreements with both of you listed, etc.
As for photos, you really only need one or two to prove that you have met in person. That's it. And family photos are completely irrelevant. They just want evidence that the two of you have met. Those other photos will not further your case and will only bog down your application.
How long ago did your relationship begin? When did you get married? How long have you been back in the UK without her?