I'm an American citizens and I'm tryna find out if it'spossible for me to file for my boyfriend who's going thru divorce in another country?

You have to be able to marry the person eventualy to be able to seek his immigration. Once divorce is finalized you might be able to do that, not before. 

Your boyfriend must be divorced before you could file a fiancé visa petition or immigrant visa petition on his behalf. Once he is divorced, you may either nasty and pursue an immigrant visa or file a fiancé visa petition on his behalf. You can read more about family immigration at http://myattorneyusa.com/family-immigration.