This tip is CRUCIAL to taking images that your partner will love: take at least 10 photos in a single setting. As a former professional photographer, I used to take hundreds of photos during a session. You know why? Because when you are photographing multiple people in one photo, I can guarantee you that somebody will be blinking or be mid-talking and it will look awkward. 

These photos don't need to spread out over minutes, just take them back to back and you should end up with at least one good photo. Here's a video example of how quickly it can be to shoot back to back and why this tip is important.