Welcome @Sebi23! Caleb, I think you will find this a supportive, sharing and frankly hot and sexy place to be. I am so sorry to hear the foolish choice your parents have made. I wish I they could bump into my 95 year old mother sometime. Despite being a very devout Irish Catholic lady her upbringing in NYC allows her a very expanded and enlightened view that not everyone in our particular branch of Christianity share, let alone those from even more conservative denominations and brands of Christianity. Anyway, she has serious words for parents who pull a maneuver like yours did, and with her quiet, soft-spoken voice and tears in her eyes, she has shamed and abashed a good number of parents who as she says "You chose Dogma over your own child? Your own son who was the result of your love for each other and God's love for you? You chose Man's rules over him? Remember, God made him this way and God doesn't make mistakes - we make them. Stop making mistakes and love your son - apologize, and maybe you will be forgiven, by him... and by HIM."
Whether or not you or anyone reading this believes in God or not, in Jesus or not, in organized religion or not, you've got to admit my Mom's logic and remonstrance of parents who failed their child (and not children who failed their parents) is a bucket of cold water over the heads of some righteous fools. And it has WORKED. I don't know, maybe it's her delivery... soft, calm and full of disappointment and with tear filled eyes from a tiny 4'10" slip of a woman. But I've seen icy hearts thaw, iron wills rust, and proud heads droop with shame after hearing her plea.
Until and unless they change, stay away or have as little contact as possible - do not let them poison your new found self acceptance and self love, as it is toxic to your well being. Continue to love what you can of their memory in your heart - and them at arms length. Cherish your relationships with your siblings and just continue to move forward.
And now that you have found your place - enjoy who you are! Our lives do not have to be shameful or hidden. Embrace your sexuality and revel in it. Explore, indulge and expand your horizons and for goodness sake, HAVE FUN! Welcome!