If a person has no intention of ever acting on base impulses, s/he will not identify with said impulses. Desires that are ignored gradually go away. By focusing on them, they increase and get stronger.
Furthermore, the position of the Catholic Church is that no one who has same sex attraction or identifies as "gay", or who supports the gay agenda, should be a priest.
That my friend is a the granddaddy of all lies. It's utter and total BS. I won't name my temptations, but they haven't diminished over the years despite my refusal to indulge. To this day some of my lusts are managed only through the same force of will that I put in place years ago to keep them in check. Luckily for me, in my case they're all heterosexual in nature, but the principle remains the same.