My boyfriend is a frequent drinker of dark liquor, can this cause me to get a yeast infection from him?

No: Yeast infections usually are not caught from sex partners. Yeast is normal in the vagina, rectum, and on genital skin, and a new yeast infection means yeasts already present have grown to greater number, causing symptoms. Even if some infections were transmitted sexually, drinking "dark liquor" or anything else wouldn't make any difference. See your doctor if you think you have a yeast infection.