Hey guys sorry for not replying on this thread sooner. These past couple weeks have been kinda crazy with all of this going on. My GF and I are in the process of slowly splitting up over this, and neither of us hate the other we are just very sad. I'm expecting this to be a full split within the next month or so. I'm trying to ease her into it as she is very hurt that I've "changed" and am taking faith more seriously now.
Those of you who are stating that we have been living in sin by premarital sex and other things are correct. I knew they were wrong at the time but I didn't take it very seriously when we started seeing each other. As I mentioned before, I really didn't take my faith seriously until the past year or so and now I'm waking up to this. The difference between us in terms of our views on engaging in homosexuality is that I know and believe that its wrong, and she doesn't believe it is wrong at all. There is a difference between knowing and believing something is wrong and then disregarding it anyways, and not believing it is wrong in the first place. Again, this is the impasse we are at and as most of you have said, it is unlikely we will be able to come to an agreement on it.
I also agree with those who say forcing her to become a Christian is not a good idea. I even told her I wouldn't do that, and that I wanted her to want it. Unfortunately, as I mentioned before, she was raised in a politically left leaning household (her mother is a hard core leftist), and undoing 30yrs of liberal programming is a nearly impossible task. She was raised to view the church negatively, especially the Catholic Church, because her mother was "kicked out" of catechism as a child - although I suspect theres more to that I haven't been told. She grew up in a predominantly Catholic neighborhood on the border of Detroit and most of her neighbors growing up were Catholic, however her mother's toxic personality effectively made their family shunned by the rest of the neighborhood. They chalked their social isolation up to them not going to church like the rest of their neighbors, but I don't believe that is true.
Some of you (especially @ValleyGunner) have posted in here about the Catholic Church specifically. I actually called and spoke with a catholic priest at my parents parish (who is my age) about this entire issue. He echoed what has been said by most of you here, and explained that it wouldn't be right to raise a family with two parents who disagree on this core value. I'll be honest, all of this has actually made me consider coming back to the Catholic Church. No guarantees but I may be coming back. Time will tell.
In summary, breaking this off is really hard but I know logically its for the best. This was my first long-term relationship so emotionally its very difficult to let go. My biggest fear is that I will not be able to find another woman who loves me this much or who I can trust like this but I know its best for me to put my faith in God to help me down my path if life whatever that may be. I'm seriously considering moving out of Michigan after our split, mainly because I want a fresh start on life. I work remotely so this is something I can easily do with my job.
Thank you to all who have offered me advice and posted in here. I'm at what is essentially the beginning of a larger faith journey and your support is very helpful and needed.