Wait, wait, wait a minute. You can't just up and decide to leave, WE need you too much! I know I'm a newbie, but I'm going through the same things, being a JW for my whole life. You're still going to run into dubs here and there and be reminded of them, you won't be able to escape it. So...I suggest you lick your wounds, learn from them, and stick around. Time heals many things, maybe you should give yourself some time, that's what you really need.
For me the relationship wasn’t about the sex, it was about belonging again, it was about being with someone that grew up the same way as me, about being with someone who thought like me and who felt like me. It was about being with “my people” again rather than my “worldly” girlfriend
Sometimes, in life, we don't get to belong to anything. This is primarily why I left the org., I just never felt that I "fit in" or "belonged", I always felt like the odd man out. So I got just used to just being satisfied with who I was, friends or no friends, fitting in or no fitting in, belong or not belonging, it didn't matter as long as I knew who I was, and that I had worth to me.
You know the old saying, "It's darkest just before dawn", stick around here, get your bearings, and move on with your life. You haven't wasted anything, you've just learned something valuable that you can hold onto for the rest of your life.