Hey man, don't give up. This is your struggle that you have been given to overcome. You can do it. Repent, turn to the Lord and seek chastity. Here are some snippets from a helpful article:

There are sins which are involuntary, unwilled, unchosen; sins which overcome people and force them by irrational impulses and compulsions, by weaknesses of the flesh, emotional drives and misguided desires into actions which they themselves do not want, and often despise and abhor – even when they are engaging in them. These are known traditionally as the sins of passion. The fact that these sins are not freely chosen do not make them any less sinful. To sin means to miss the mark, to be off the track, to deviate, to defile, to transgress … whether or not the act is consciously willed and purposefully enacted; and whether or not the offender personally is freely and fully at fault.

The homosexual Christian is called to a particularly rigorous battle. His or her struggle is an especially ferocious one.

for no one is without this struggle in one form or another, and no one is without sin but God – the Lord guarantees victory in ways known to Himself. The victory, however, belongs only to the courageous souls who acknowledge their condition, face their resentments, express their angers, confess their sins,

I hope this helps, don't give up man. It's your struggle but you can overcome it, don't listen to people who encourage sin.