Hontou ni ai shiteiru.
Not really possible to translate directly.
kebinsan, anata wo honto ni aishitte iru
aisuru or aishtte iru is love in Japanese for people daisuki is love for things
To say "i love you" in japanese: ai shi teru Ah-shee-tare- oo
Ai
aishitteiru
since when does Jacob speak Japanese?
Sukidayo ^^^ that means i like you. Love is pronounced as Ahh-E Say ahh and say "E" like the letter.
You could say "kimiga hoshiindesu" which means "i want you (in a sexual way.)" Hope that helps :)
Hontou ni.
Xinda
manderine is Chinese