Parents, my mom is a single mom and...(pls read). what do i do?

What your mom does is her business. It may be immoral but you aren't the shining example of moral either. You said "he's a good man but married." your mom, "pays attention to you, and loves you very much" but you are going to look down on her cause of that. I mean I understand that because you are a teenager and like most teenagers you think you own the world but you are trying to rebel and you are wanting to blame your mom for it. No matter how I look at it, you are just acting like a spoiled brat. What I see is "I"m gonna do this cause my mom" not saying that what she is doing is right, or anything but that isn't for me or you to decide. You will be 18 in 2 years, then you can go out and do what you want. It really doesn't sound like a bad situation so I don't know what you are complaining about.