Can a practicing homosexual be a practicing Christian?
Christians can, and sadly do, fall into all kinds of sin. But if Christians call what God calls sin a grace, we are calling God a liar, and, as 1 John warns, God’s Word and His truth are not in us (1 John 1:5-10). Some say you should love the sinner and hate the sin. I think we should love the sinner and hate our own sin. If we spent more time hating our own sin, we would be more responsible in our dealings with others.
But we want to be clear about what God calls sin. God calls any heart that is not submitted to Jesus sinful. You are a Christian if you have been redeemed from sin by the blood of Christ. Do we all struggle with sin? Yes, and some struggle more than others. Do some people have to give up more than others? Yes. The Christian life is not democratic; some have one cross to bear and others ten.
Can someone be a Christian who struggles with homoerotic desire? Yes. There is no sin of temptation. The question is what you do with the temptation. Repentance is the ground zero of the Christian life. We who are Christians are citizens of a new country, and there is no dual citizenship for the believer. Christians exchange all unholy affections for Christ, and this requires daily repentance.