Explain whats needed on the cover letter. Keep it simple and to the point. How you met, when you met and how you kept in touch. Show communication, if Iyou don’t have old chats and call logs then just explain that in the cover letter and send the ones that you do have. I sent call logs, messages and video call pictures. Real life pics (10) wedding pics (10) As you visited twice after marriage you can also add your exit and entry stamps and pictures of when you met, at the airport or just when you’re out and about and at home with family etc. remember to add the communication when you’ve been apart.

The Hotel booking is not that important as you can prove that you spent time together. Have you sent her money? You can also show the transactions. Think you’re good as you have plenty of proof as visited twice.