Many Colombian women prefer foreign men because they have often been repeatedly disappointed by the unfaithfulness of Colombian men. In Colombia, it is not uncommon for a man to have a wife and kids on one side of town, and a girlfriend and kids on the other side of town, and in some cases, the two women know about each other.
In North American culture, this situation would be considered taboo and if it did occur, would be covert. In Colombia, it is quite often overt.
What many of these approachable, exotic beauties want more than anything else in the world, is to be a loving wife and mother, and have a happy home with a loving, supportive, faithful foreign man, who will be genuinely attentive to her.