my first question

i am starting to understand which supporting documents i need to provide for a fiancee visa

do you provide original bank statements / wage slips and boarding passes/ tickets mortgage statement or will photocopies be ok or both (original/copies)

do they have to be certified ?

do the passport page / stamps have to certified copy ?

and do you have to supply 2nd copies of emails / messenger transcripts and love letters etc

also do you need to supply copies of my girlfriends passport / photo

thanks martin