you prolly have seen this before, but the hell with it :D..i thought i'd share it anyway :P

Afrikaans - Ek het jou lief
Albanian - Te dua
Arabic - Ana behibak (to male) Ana behibek (to female)
Armenian - Yes kez sirumen
Bambara - M`bi fe
Bangla - Ami tomake bhalobashi
Belarusian - Ya tabe kahayu
Bisaya - Nahigugma ako kanimo
Bulgarian - Obicham Te
Cambodian - Soro lahn nhee ah
Cantonese Chinese - Ngo oiy ney a
Catalan - T`estimo
Cheyenne - Ne mohotatse
Chichewa - Ndimakukonda
Chinesse - No Ai Ne
Corsican - Ti tengu caru (to male)
Creol - Mi aime jou
Croatian - Volim te
Czech - Miluji te
Danish - Jeg Elsker Dig
Dutch - Ik hou van jou
English - I love you
Esperanto - Mi amas vin
Estonian - Ma armastan sind
Ethiopian - Afgreki`
Faroese - Eg elski teg
Farsi - Doset daram
Filipino - Mahal kita
Finnish - Mina rakastan sinua
French - Je t`aime, Je t`adore
Gaelic - Ta gra agam ort
Georgian - Mikvarhar
German - Ich liebe dich
Greek - S`agapo
Gujarati - Hoo thunay prem karoo choo
Hiligaynon - Palangga ko ikaw
Hawaiian - Aloha wau ia oi
Hebrew - Ani ohev otah (to female) Ani ohev et otha (to male)
Hiligaynon - Guina higugma ko ikaw
Hindi - Hum Tumhe PyarKarte hae
Hmong - Kuv hlub koj
Hopi - Nu` umi unangwa`ta
Hungarian - Szeretlek
Icelandic - Eg elska tig
Ilonggo - Palangga ko ikaw
Indonesian - Saya cinta padamu
Inuit - Negligevapse
Irish - Taim i` ngra leat
Italian - Ti amo
Japanese - Aishiteru
Kannada - Naanu ninna preetisuttene
Kapampangan - Kaluguran daka
Kiswahili - Nakupenda
Konkani - Tu magel moga cho
Korean - Sarang Heyo
Latin - Te amo
Latvian - Es tevi miilu
Lebanese - Bahibak
Lithuanian - Tave myliu
Malay - Saya cintakan mu / Aku cinta padamu
Malayalam - Njan Ninne Premikunnu
Mandarin Chinese - Wo ai ni
Marathi - Me tula prem karto
Mohawk - Kanbhik
Moroccan - Ana moajaba bik
Nahuatl - Ni mits neki
Navaho - Ayor anosh`ni
Norwegian - Jeg Elsker Deg
Pandacan - Syota na kita!!
Pangasinan - Inaru Taka
Papiamento - Mi ta stimabo
Persian - Doo-set daaram
Pig Latin - Iay ovlay ouyay
Polish - Kocham Ciebie
Portuguese - Eu te amo
Romanian - Te ubesk/ Roman Numerals - 333
Russian - Ya tebya liubliu
Scot Gaelic - Tha gradh agam ort
Serbian - Volim te
Setswana - Ke a go rata
Sign Language - ,,,/ (represents position of fingers when signing`ILove You`)
Sindhi - Maa tokhe pyar kendo ahyan
Sioux - Techihhila
Slovak - Lu`bim ta
Slovenian - Ljubim te
Spanish - Te quiero / Te amo
Swahili - Ninapenda wewe
Swedish - Jag alskar dig
Swiss-German - Ich lieb Di
Tagalog - Mahal kita
Taiwanese - Wa ga ei li
Tahitian - Ua Here Vau Ia Oe
Tamil - Nan unnai kathalikaraen
Telugu - Nenu ninnu premistunnanu
Thai - Chan rak khun (to male) Phom rak khun (to female)
Turkish - Seni Seviyorum
Ukrainian - Ya tebe kahayu
Urdu - mai aap say pyaar karta hoo
Vietnamese - Anh ye^u em (to female) Em ye^u anh (to male)
Welsh - `Rwy`n dy garu
Yiddish-Ikh hob dikh
Yoruba - Mo ni fe