Keanu Reeves was invited to a wedding by strangers, and he agreed to come.
Actor Keanu Reeves was an unexpected guest at the wedding of a pair of complete strangers. It all happened at the Fawsley Hall Hotel in Northamptonshire, UK, according to the Daily Mail.

The 57-year-old actor was one of the guests at the hotel that celebrated the wedding of James and Nikki Roadknight. The newlyweds met the star in the hotel bar and invited the actor to join the celebration. Reeves suddenly agreed.
Keanu congratulated the young, took pictures with them and talked to the guests. He was so kind and friendly! – said Nikki Roadknight.

Reeves came to the UK to film a documentary about Formula 1 racing. The actor is a longtime fan of this sport.
Keanu Reeves with newlyweds