This is the most common and straightforward way to say "always love you" in Cantonese.
Here are some other options that convey similar meanings:
* 一世愛你 (yat sai oi nei) - "Love you forever"
* 永遠都愛你 (wing yun dou oi nei) - "Always love you" (more emphatic)
* 永遠疼你 (wing yun ting nei) - "Love you forever and always" (more affectionate)
It's important to note that the specific pronunciation might vary slightly depending on the speaker's dialect and region.