See our brilliant student Bill Kingston's answer on Quora :P
Q: What does “我愛你” mean in English?
Answered : Billy R. Kingston, B.A. Sociology & Culture of China, Singapore Polytechnic (2019)
It is traditional Chinese which means ‘I love you’.
The simplified version is 我爱你（wo3 ai4 ni3）with same pronunciation.
The difference is the 心(heart) in 愛.
I live in Singapore and I learned Simplied Chinese from my teacher at Kirinmandarin. But I have lived in HK for a while and know a few traditional Chinese characters hhh~
Hope it helps! Best of luck learning Chinese.