The Gossip and the Grump by Pippa Grant

The Gossip & The Grump is a one night stand to enemies to lovers romcom featuring a woman desperately trying to unlearn everything she knows about everyone, a grumpy misfit hiding a secret heart of gold, an unfortunate incident with powdered cheese, and the world's biggest lap puppy. It stands alone, but you wouldn't go wrong to read The Worst Wedding Date first.