Well, sure, he can talk.

Add in your own language

English: I love you
Slovak : Milujem ťa
Thor: This girl, I like her. ANOTHER!
Finnish: Rakastan sinua
Slovenian: Ljubim te
Croatian: Volim te
Danish: Jeg elsker dig
Portuguese: Amo-te
Tagalog: Mahal kita
Punjabi: Panchod chup kar
Somali: Dhillo iska amus
Arabic: Ana bahebak
Chinese: 我爱你
Moroccan Arabic: Kanbghik
Polish: Kocham cię
Albanian: Te dua
Hebrew: אני אוהב אותך
Urdu: Meh tum se pyar kartee hoonh
Greek: Σε αγαπώ
Latvian: Es tev milu
Irish (Gaelic): Táim i' ngrá leat
Japanese: (romajii) Aishiteru yo.
Tumblr: FUCK YOU YOU FUCKING FUCK I HATE YOU
Keymash: alskdfjcashbcnlasdjfan
Thornberry: BLARHAGARHHGARH
Dean: Don't ever change.
Fangirlish: JESUS FUCKING CHRIST LOOK AT YOU jasdhfifhss
Hungarian: Szeretlek
Persian: Doostet daram
Turkish: Seni seviyorum
Batman: NO LOVE. ONLY JUSTICE.
Russian: Я тебя люблю (Ya tebya lyublyu)
Italian: Ti amo~
Nightwing: Touch my ass
Robin: Kiss my fist
Spanish: Te amo
French: Je t'aime
Dutch: Ik hou van je.
Ukrainian: Я люблю тебе.
German: Ich liebe dich
Bengali: Ami tumake bhalobashi
Loki: Never doubt that I love you
Hulk: Hulk love you. You are Hulk's.
Writer: I love you as much more than the sun loves the ocean, the grass loves the breeze, and the heat loves the rain.
Me (vivalaminus) : asldkfjdlgkgdfkdmfsfsmfsfsqdlkjq !
Coldplay: You know, you know I love you so
Hiddlestoners: I HATE YOU
Carly Rae Jepsen: Call Me Maybe
James: And, if you happen to remember that it’s the anniversary of my birth, remember that you were loved by me. And that you made my life a happy one, and there’s no tragedy in that
Bulgarian: Обичам те (Obicham te)
Sherlock: Your chromosomes have combined beautifully.
Castiel: We do share a more profound bond.
John: Oh god, yes.
Castle: Every morning I bring you a cup of coffee, just so I can see a smile on your face. Because I think you are the most remarkable, maddening, challenging, frustrating, person I've ever met
Beckett: I almost died and all I could think about was you.
Castle/Beckett 2: Always.