First, as baltobetsy said, look up Courage - not because it's supposed to be a sort of funnel to collect all the gay Catholics out there that everybody automatically gets referred to, but because it's a useful gateway to dealing with same-sex attraction in a soberly Catholic way.
Second, lighten up. Going to mass isn't going to cure your homosexuality, because for the most part, God avoids doing miracles when natural means are available. I know because the dishes, the laundry, housecleaning, and dinner never get miraculously done, no matter how hard I pray that he swoop down and solve my problems for me.
Third, I have some useful articles and such for you to look up online that may be very helpful to you ... if you ask.
Finally, cut out the suicide threats. The irresistible pull of hot guys, the loneliness, the self-hatred, the frustration, and the temptation to flamboyantly off yourself are tightly connected in a way you're about to understand ... if you care to examine yourself in light of refined common sense and deep self-knowledge.