While i agree there are former homosexuals, as there are former drug addicts (though i have yet to meet a totally former sinner), broadly rejecting Christian theology when dealing with homosexual agenda lies means that you hold that the former has no place in defining what lies are, but that something else can.
Certainly medical studies have weight insofar as they are valid, and related to the "nurture versus nature" debate, yet the theological aspect does also. (Gn. 4:7)
And the Bible allows that what parents can do can affect offspring, (perhaps besides nurture, as some studies indicate DNA can change thru generations due to their experiences), yet it negates justifying acting out sinful inner proclivities, a we all are born with them, but not as slaves to any particular sin, which man can at least resist in the beginning.
And refutation of attempts to negate the Biblical injunctions against homosexual relations, and find sanction for them, can be seen here , by the grace of God.
I am not rejecting at all moral absolutes based on religious scripture or religious based moral principles.
I just don’t want, myself, to get into a discussion of theology in regards to whether there are or are not “former” homosexuals seen through the lens of any particular Christian viewpoint. Especially since even among Christians such viewopoints may vary in particulars; it is not germane to the “born that way” or “made” discussion.
I agree with DJMacWoW - we are born with a sinful nature, but that doesn’t mean some are born to be thieves, some born to be murderers, some born to be pedopiles, some born to be homosexuals, etc.