2- I am going to provide chat logs as evidence of the relationship, we have always used Facebook messenger. I do know how to download the logs but I'm not 100% comfortable with sending all of our messages. There isn't anything incriminating or dodgy in there but I feel it's a bit of an invasion of privacy. Is there a way to just have a record of the chat being sent without actually showing the message? Or do I just have to grin and bear it.
You actually should NOT send ANY message content. All you need to send is a list of dates, times and names. NO actual messages.
So, you'll want to go through the messages, choose maybe 60-80 from the entire relationship, at regular intervals, take a screenshot, crop out everything except the name and date and paste them into a Word doc. You should be able to get about 20-30 logs on 1 page.
So, say you're covering 2 years of a relationship (24 months), you might want to select 2 messages per month, to give 48 in total. If you're only covering 6 months, you might select 2 per week (8 per month), giving 48 in total.