Start by asking the couple whether they even want the height difference minimized. Many couples prefer their photos to reflect reality, and forcing them to look the same height can feel unnatural.

If they do want some help, use posing and locations that reduce the difference naturally:

• staircases: place the shorter partner one or more steps higher, but don’t make them exactly the same height
• seated poses: sitting side by side brings heads closer together and works well for leaning in, kissing, or close waist-up portraits
• one seated, one standing behind: the standing partner can lean over or embrace the seated partner for a flattering, intimate look
• tighter compositions: shoot from the waist up or closer so height is less emphasized

You can also use mild forced perspective, but keep it subtle so the result still looks believable.

In general, the safest approach is to embrace the couple as they are and use posing only to flatter them, not to disguise them completely.