Homosexuality doesn't deny reality. It does deny social expectations, but I still can't see how it is a mental illness.

People once (less than 100 years ago) considered being left handed as deviant, wrong and an offence to God. People who are left-handed aren't mentally ill or wrong, they are not denying reality.

There are some weird hedonistic and socially damaging behaviour in the "LGBT community". That is not a reflection on homosexuality its self, but rather on the modern Western subculture that has developed over the last 200 years and not everyone who is LGB is part of this subculture.

I think you are trying mentally dealing with conflicting values, being a lesbian and being a Christian at the same time.

I abandoned my religious faith when I was 14 because I felt like my religious values and sexuality were at odds and this was the only thing to stop the mental anguish. I had been unsuccessful in stopping myself from being gay for the previous two years, so abandoning my religious faith was the only answer.

I was lucky that my maternal grandfather became an atheist after serving in WW2 and became outspoken about it later in life when I was a young child.

But if I was a young person today, there is a good chance I wouldn't have had to give up my faith, as so many churches are changing their tune.