What was Stevie Ray Vaughan's sexual orientation?

Stevie Ray Vaughan was heterosexual. He was married to Lenora Baily from 1979 to 1988. They divorced due to drug issues. He started seeing Janna Lapidus in 1986, before the divorce from his previous marriage was finalized. He referred to her as his fiance until he was killed in an accident in 1990.