Being denied for a B-2 visitor visa, because your fiance applied for the WRONG visa should not hurt the fiancee’sr chances for any future visas, as long as all questions asked during the B-2 visa application process are honestly and factually answered.
“I met this great gal online. She lives on the other side of the world. we haven’t met in-person yet. and I want to meet her face to face.” BUT……
“I am: too busy, afraid of flying, got no time, don’t like travel, don’t travel well, too expensive, It is better that she should come to me, ….”
Unfortunately there is no such thing as a “girlfriend” visa.
The closest alternatives are a B2 Visitor visa (sometimes called a tourist visa) or a K1 Fiance Visa.
But a fiancee visa requires that the couple has already met in-person, and not only that but that they are serious and want to marry. Often the guys most eager to pursue a visitor visa, aren’t quite ready to commit.
This leaves the B-2 Visitor visa.