The only acceptable sexual relationship is between one man and one woman married to each other. However, I think that Paul's letter to the Roman Christians emphasized what seems to be God's exceptionally harsh punishment for those who indulge their homosexual desires. After all, He didn't drown the antediluvians because they were playing poker and telling smutty jokes, he drowned them primarily because of their homosexual practices.
Agreed. It is the act and promotion of homosexuality that should be fought against. Those who struggle with temptation should be guided through it towards the healthy, God-inspired, and God-designed life of holy matrimony or holy celibacy - whether the temptation be homo or hetero.