Doing It Together, by Gordon Lawrie

As Darcy approached, Lizzie tensed: it was bigger than she'd expected. But he had another surprise for her.
 
"I need help, I've never done this before," he confessed, fumbling for the spot.
 
"Let me guide you," Lizzie said. She took his hand. "There. That's the place," she reassured him. "But relax, it's not a disaster if it goes wrong."
 
She leaned back against the wall for purchase. Soon, she felt a judder.
 
Darcy smiled, but looked at her anxiously. "OK?"
 
"Perfect," Lizzie said. "One hole drilled, 15 to go. We'll have this IKEA wall cabinet up before you know it."