grammar - Is "I just might have a chance" grammatically correct?

I would like to know if, "I just might have a chance" is grammatically correct. Consider the following sentence:

"If you just knew what I feel for you, I just might have a chance to be with you."

Trying to stress that I might have a chance but just might not be sure of it.
I found this Quora post which says that this construction is wrong but I would like to get a second opinion.

Answer

According to Webster's Third New International Dictionary, Unabridged, "just might" is fine. From the definition of "just":

5: perhaps

for at least five years, if at all, but inexpensive rolls of plastic
coated with electricity-generating film just might. — Fred Guterl,
Newsweek, 23 Sept. 2002>