I am so glad you brought this up; because the suicide rates, especially for the Transgenders, is really way, way above the normal suicide rates in the U.S.
First thing is to pray for homosexuals to be convicted by the Holy Spirit of sin and come to repentance.
Second is to speak the truth in love as you enter into the public dialogue of this listening circle on homosexuality.
Proclaim Jesus Christ through the Scriptures.
People may not want to hear what God has to say, but we are commanded to proclaim His word to all people.
Tell homosexuals the hope of the gospel.
Their sin can be forgiven and their bondage to it can be broken.
Third is to personally minister.
Do not shy away from a person because you find out they are homosexual.
They need a true friend and you can be it.
However, keep in mind that a true friend helps a friend overcome sin.
There will be toleration of sin as you work with the person, but there is never acceptance of sin.
Fourth is to portray hope.
1 Corinthians 6 tells of many sins that once characterized the Corinthian Christians including homosexuality and other sexual perversions, but they were washed, sanctified and justified in the Lord Jesus Christ.
At one point in time our lives where characterized by our sin, but after Christ comes into our lives we are characterized by Him.
Our particular sins may have been different than the homosexuals, but we were in the same state.
Dead in our trespasses and sin until God in by His grace saved us.
There is hope by faith in Jesus Christ.
That is the message we are to give both in word and by our lives.