When I first read your question I started to dismiss it, but after some consideration, it seems that in actuality this may be one of the biggest challenges to the Church today. After some mental fisticuffs I decided to attack it with the old adage "what would Jesus do?"
The first thing that came to mind was:
John 13:34 KJV
A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another.
So I considered; exactly how does that align with the question?
Then I remembered the following Scriptures of what Jesus said to the adulterous woman:
John 8:10 and 11 KJV
10 When Jesus had lifted up himself, and saw none but the woman, he said unto her, Woman, where are those thine accusers? hath no man condemned thee?
11 She said, No man, Lord. And Jesus said unto her, Neither do I condemn thee: go, and sin no more.
Then I reasoned that the reason he said that was because:
John 8:7 KJV
So when they continued asking him, he lifted up himself, and said unto them, He that is without sin among you, let him first cast a stone at her.
I then had to consider this:
Deuteronomy 5:18 KJV
Neither shalt thou commit adultery.
and it dawned on me that, that was the same as:
Leveticus 20:13 KJV
If a man also lie with mankind, as he lieth with a woman, both of them have committed an abomination: they shall surely be put to death; their blood shall be upon them.
Leviticus 20:10 KJV
And the man that committeth adultery with another man's wife, even he that committeth adultery with his neighbour's wife, the adulterer and the adulteress shall surely be put to death.
So I began to realize two things:
Jesus was not condemning the woman for being heterosexual, nor God condemning a man for being homosexual.
The condemnation was for the acts of the individuals.
Many have claimed that people can no more control being homosexual than they can being heterosexual. I will not challenge the veracity of that statement.
I would however like to point out what is highlighted above. It tells me two things:
Since they had only brought the woman and not the male, Jesus may have had a different answer had there been equal accusations as stated in the law of Moses.
Jesus knew exactly how the woman would, respond to his command that she go and sin no more, and I am sure he took that into consideration when he said "neither do I".
Taking these things into consideration; the Christian response, it seems to me, that the answer to your question revolves around to:
"Love the sinner and hate the sin."
And just as Jesus probably did; consider the actions involved and their repentance.