When I Marry A Stranger (2018)

Maysarin is a famous socialite who's engaged to Sarut, but he left her on the day of the wedding. Kadethaen is a 30 year-old real estate businessman who's waiting for Pinmanee, his bride at the reception of a luxury hotel, but he saw her escape the wedding with another man. Kade walked out to a party at the beach, where he met May, who was still in her wedding dress drinking alone. They started drinking together and people thought they were a couple, so they went along with it and he jokingly proposed to her. Afterwards, they went back to the hotel and spent the night together. In the morning, May regretted what happened and wants to forget about Kade, but he's not going to give up on her.