You and your Non-Resident (NR) spouse-to-be will be issued with a Letter of LTVP Eligibility (LLE) with a reference number, valid for one year, if your Pre-marriage LTVP assessment (PMLA) is successful. 

The LLE does not constitute the approval of a Long Term Visit Pass (LTVP). Should your NR spouse-to-be decide to reside long term in Singapore after you are legally married, you may submit a formal application for LTVP using the e-Service. Each application for a LTVP will be assessed according to its individual merits.

This information is sourced from ICA