Your beliefs don't matter if they don't line up with the infallible word of God. Jesus taught "Love your neighbor as yourself," but nowhere in Scripture does God suggest for children of God to love sin: "Do not be deceived: neither the sexually immoral nor idolaters nor adulterers nor male prostitutes nor homosexual offenders nor thieves nor the greedy nor drunkards nor slanderers nor swindlers will inherit the kingdom of God." (I Corinthians 6:9-10)
A Christian believing that homosexuality is not sinful, doesn't know or perhaps care what God thinks about the matter. God tells us, "Do not lie with a man as one lies with a woman; that is detestable" (Leviticus 18:22), and "the men also abandoned natural relations with women and were inflamed with lust for one another. Men committed indecent acts with other men ... " (Romans 1:27).
Our culture is becoming tolerant to homosexuality, even equating your sexual orientation to the color of your skin. However, God isn't becoming tolerant to sin. He never changes.
Unlike race or gender, sexual preference is a choice to make. We can see all through the Bible that believers struggled with temptations. Homosexuality can be overcome, because "all things are possible with God." (Mark 10:27)
Many TV shows include a gay character; legislators vote to extend rights to gay couples; and many Christians condone homosexuality. Don't be fooled -- the homosexual lifestyle isn't one that God looks favorably upon. "Do not conform any longer to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God's will is -- his good, and pleasing, and perfect will." (Romans 12:2)