Temptation is not the same as sin. Temptation can certainly lead to sin but maintaining the distinction between temptation and sin is vitally important. Getting this wrong destroys our Christology and creates a culture of unnecessary guilt in the life of a Christian. Misplaced guilt is one of the chief weapons of our serpentine accuser (Rev 12:10).
The discussion of how believers and churches should respond to brothers and sisters in Christ who struggle with same sex attraction has led some evangelicals to argue that the attraction itself is sinful, even if the Christian remains chaste, and in obedience to Christ never yields to the temptation. Of course, same sex attraction is simply one among many ways all believers are tempted to sin. How we answer the question of the relationship between temptation and sin has huge implications for every Christian.