The advice you received that you're better off attending court on your own was not good advice. You'd be far better off getting a solicitor if you can. You'd probably qualify for legal aid. These can be quite complex cases.
So what usually happens is you issue an application and accompany that with a witness statement.
If the first hearing is "on notice" i.e. the Respondent has been told about it then the judge will give directions at that hearing if the matter is to be contested. This includes ordering a "scott schedule" which is a table where you set out your allegations in a list (normally limited to 5).
Often the judge also orders a narrative statement. This is where you go through each of the allegations and you explain what happened from your memory. You can attach copies of any text messages etc as exhibits.
You have to send a copy to the other side's solicitors and to the court. He then replies to what you've written in his own statement.
At the next hearing the judge will look at everything that is filed and see if the case is ready to go to a contested hearing. That is usually 1 day long and involves the you and the respondent each giving evidence and being cross-examined. At that hearing the judge makes findings about whether the allegations are true and whether an order is necessary.
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