1. A romantic relationship between two people with the intention of commitment and potential long-term partnership, as opposed to casual dating
After dating for a few months, they decided to have serious dating and discuss their future together.
Depois de namorar por alguns meses, eles decidiram ter um namoro sério e discutir o futuro juntos.
2. Dating with the explicit goal of finding a life partner or spouse
She is looking for serious dating, not just casual encounters.
Ela está procurando um namoro sério, não apenas encontros casuais.