1) Why isn't female-female sex condemned under YOUR same logic
Romans 1 is talking about idolaters who worshiped idols and were malicious murderers, read the whole passage.
Romans, Chapter 1. In this passage, the Apostle Paul gives a very specific list of characteristics describing those in question: He describes them as those who once knew God, but who chose not to honor God as God. Instead, they worshiped material images of human beings, birds, animals, and reptiles as objects of worship rather than the One True Living God. We are told that they were filled with EVERY kind of wickedness, evil, covetousness, and malice. They were full of envy, murder, strife, deceit, craftiness, gossip, slander, insolence, haughtiness, and boastfulness. They were inventors of evil, rebellious toward parents, foolish, faithless, heartless, and ruthless. (NRSV) As a result of their total depravity, God turned them over to complete spiritual ruin, so that they left no stone of sexual debauchery unturned, engaging in mass orgies and idolatrous sexual cult worship, which included both homosexual and heterosexual debauchery.
These murderous, malicious people who worshiped idols and hated God after once knowing Him, have NOTHING to do with people who have a sincere desire to love and worship the Lord Jesus Christ and who happen to be homosexual. Today, there are multitudes of homosexual people who are tirelessly yearning to be a part of the Church so that they can WORSHIP the One True Living God and profess Jesus as their Savior. Anyone who can possibly equate the monstrous, reprobate people of Romans 1 to modern-day gay and lesbian people who reach out to humanity, love and respect their parents, and who have been expelled from the church they love, just for being homosexual, is not using common sense! Like those religious leaders who scorned Jesus, they have chosen to believe lies founded on their traditions.
http://www.opendoorcenter.com/myths_&_facts.htm