there's many ways I could tell you this.....
1. Je t'aime------------------------French
2. Ik houd van
u------------------Dutch
3.
Ich liebe dich------------------German
4. Σ'
αγαπώ------------------------Greek
5. Ti
amo---------------------------Italian
6.Eu te
amo-----------------------Portuguese
7.Te
amo--------------------------Spanish
8.
私は愛する---------------------Japanese
9.我爱你---------------------------Chinese
But the simplest way would just be......
10. I Love You