Love / How do we know that Polish guys really serious in their relationship? [16]

Hello All, i need some advice from you, and really appreciate all the good or bad response! I'm an asian girl, i'm 18, and i fell in love with a polish guy who younger 7 months than me. We never meet face to face becuz being in miles away each other is complicating, we just met in twitter, and we started talking everything of our things till now we chat everyday, then we exchanged our email address, facebook, my space, amd everytime i have a problem, he always asks and finds a solution, me also do the same the way he's treating me.we've been like this almost 1 year.. Btw he's such an amazing boy, respectful, caring, sweet so much, simply perfect, honest i guess. We also communicate of mailing a letter to each other. And one time, I disappeared from twitter for 4 days just wanna test him does he miss me or not? And guess what? He said he missed me a lot, and got crazy without talking to me. I was so surprised, and honestly i feel the same. I always show him affection, pay a big attention for him. He thanked to me and so did his fam. He told that his fam liking me, so often tell me that i'm an ideal wife for him, he ever said kocham cie, and i also ever told him that 'i kocham you too' haha. But i so wonder, is he really serious? Will he come to visit me and take me with him wherever he goes? I know this sounds awkward, becuz we just know ech other from site, but i actually have a hope from the bottom of my heart, i want to always take care him and keep him and help him everyway I can . But i'm hesitant, is he really serious with his words? I really need advice thank you so much :)