I think
you personally need a lot more “development and understanding” to grasp the truth of the teachings of the Catholic Church.
The concept of a homosexual marriage being a “one-way ticket to hell” should be very easy to understand.
Assume that two Catholic homosexuals were civilly married or simply engaged in a homosexual relationship. When they engage in homosexual behavior, they both commit mortal sins. Their immortal souls are now in grave danger. Of course as Catholics, they can avail themselves of the Sacrament of Reconciliation. Their mortal sin will be absolved, but they still must atone for the sin at judgement day.
To be truly in love with another person you must want the best for the one you love. The best for another is eternal salvation. How can two people love one another if they continue to endanger the eternal life of the other???
Assume again that our two homosexual friends spent a romantic Friday evening engaging in all sorts of homosexual activity. Since they go to Mass on Sundays, they plan to go to Confession on Saturday so they can receive Communion at Mass. However, one of the partners decides to run down to the pharmacy to buy more condoms. On the way he is struck by a train and dies instantly.
According to the teaching of the Church…he just bought his ticket to hell.
But…
The Church never condemns anyone to hell. We never claim that someone is “in hell”. Because even the most evil person could have reconciled himself with God the moment before he died. We just don’t know. We pray that forgiveness was granted and hope it was.
The bottom line is…
it is not worth the risk.