That depends. If you believe that homosexuality is a "lifestyle choice" and therefore a sin that can be stopped, or if you believe that it is a "genetic" defect that is inherent in that person's makeup. Tough call. Is it a "learned" behaviour or is it a "sexual addiction" akin to drug addiction? Does it come from the way a person was raised? Bad aloof father or over protective mother? Or a combination of many factors? I'd have to seriously consider all these facets before leading my daughter down the aisle.........
Probably a combination of many factors; people are complex. I assume that some people have a propensity toward homosexuality and it is, therefore, more difficult for them to enter a heterosexual union. But more difficult does not mean impossible. Even a propensity toward something, anything, still involves a choice. It’s just more difficult for some people than others.