Hmm... I can can assure you that there is a small population of gaymers here at ENWorld... I see by your # of posts that you've been around the site for a little while. If you look carefully you'll find a few threads relating to gayming or gaymers (sorry, I don't have the time to search for the links at the moment). Through those threads you'll get an idea about who would be most "approachable" in terms of topics relating to being a gay gamer--to be fair: there are many straight people here who are accepting, if not sympathetic, so just I encourage you to stay in touch with ENWorld!
That said, I do not envy your situation. You are in your mid-teens (I presume), and teenage life basically sucks for any human being... It's a painful, for some very painful, period of personal growth. In light of where you are in life, and the academic situation you going into, my advice is to be patient for the next few years until you reach the age of majority--then you will have much more personal power and autonomy! In the meantime, enjoy what you can do (like play D&D!

), and look for peers and trustworthy adults who could give you good counsel when you need it. Catholics, as a community share a diversity of opinion on many things! Assuming your faith is important to you, I'm sure there are plenty Catholics who would be helpful to you

The world is a big place with many people--not even Texas is as "monolithic" as you may believe. Just do a little research for your own benefit... (Getting to know what's out there is a necessary part of the process of coming out. Just be careful, it's not always a friendly world out there regardless of orientation!

)
Check out this site
here. Its a start
Btw: Eric Noah is correct, ENWorld is about our hobby, and we have to mind our words for the benefit of all.
That's my 2 cents worth for the moment
Good luck in school, "keep yer head down" for now--unless you can afford to assert the changes you need. It ain't fun bein' a teen, but it'll pass (thank gawd!), and game on-er-gayme on!
-W.