Mark has something to say to you
Mark 12:31 - And the second [is] like, [namely] this, Thou shalt love thy neighbour as thyself. There is none other commandment greater than these.
Jesus was willing to die on the cross for sinners. No man will ever match that love. But the same God who accepted that payment for us sinners inspired the apostles to write such things as
1 Corinthians 5:9-11 (KJV)
[SUP]9 [/SUP] I wrote unto you in an epistle not to company with fornicators:
[SUP]10 [/SUP] Yet not altogether with the fornicators of this world, or with the covetous, or extortioners, or with idolaters; for then must ye needs go out of the world.
[SUP]11 [/SUP] But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.
Paul had already taught them to avoid deliberate sinners, the heathen, though admitting it's impossible not to have some dealings with them while still living on this planet.
Paul added not to "keep company" with anybody claiming to be a Christian who is maintaining a sin lifestyle. We are not even supposed to have lunch with such a "Christian". It isn't that we are told to hate a homosexual. We must be willing to give him the gospel earnestly. But if he claims to be saved while doing that sin or similar sins without repentance, we can't honor him by hanging out with him.
That isn't a cultural thing meant for those ancient people. People that make it about culture will excuse all sins, adjusting the concept of sin to satisfy whatever culture a person is of today, to the point of condemning a murderer to 7 years of prison, then letting him out in months.
When Jesus went to sinners, outraging the Pharisees, he wasn't spending the night in the bar. He had to keep the law concerning such activities, but wasn't bound to the interpretations of the Pharisees. He took the gospel to sinners. That's a far as we can go with overt sinners, especially of those listed sins that God hates.
In Romans Paul outlined how it was many of his disciples "were" engaged in such abominations, but no more. There's no doubt that God has not lifted consequences for abominations (their own blood upon them), will judge people who will not repent, will see them cast them into the lake of fire one day.
If you know a homosexual/lesbian/etc. warn them, then walk away if they won't believe and repent. Jesus told his disciples not to persist in trying to convince people. If they reject the gospel, leave, shake their dust off your shoes. If they repent, disciple them, but not alone. The pattern is two by two or more to make disciples. Get them into a church program. Meet them in a common area with other believers.