New love has a shaky past, and his parents are hypocrites..How do I deal with it?

I started seeing this man and we hit it off right away. He is sweet, attentive and so easy to talk to. In fact I couldn't believe the instant attraction we both had towards each other right away. That has never happened to me. Once we started seeing each other more and feeling more comfortable with each other he revealed to me that he has a child with another woman. While I did feel a little awkward, the fact that he has a son does not bother me. What did bother me was what he told me next- That he didn't want his ex girlfriend to have the baby and asked her to have an abortion. She wanted him to marry her but he told her he didn't love her and that if she had the baby he didn't want anything to do with it. This young woman decided to keep the baby. When he realized he wasn't going to get his way he told his parents what was going on. He said his parents-who are these very conservative Christians told him that what he did was a sin and that because this child was born out of sin they would never recognized him or her as their grandchild. They said if he had anything to do with it they would disown him. I was shocked..both at his reaction and his parents. I asked if he has ever seen his son and said he wasn't there for his birth and never saw him as a baby. But the son asked his mom-(who met another man and got married) about his real dad and wanted to invite him to a school event. My guy said he was touched by the invitation and decided to go and meet him. He said was shocked at what a great kid he was. But he told me he is not a part of his life and while he does send him birthday cards and calls him at Christmas this other man has taken up the role as his father. He said the fact that his parents resent his son makes it hard for him to have a relationship with him. His younger sister really wanted to get to know her nephew and when her parents found out they told her they would disown her if she ever had contact with that "sin". Well his parents are real hypocrites. His mom especially because she says she is dying to have grandchildren. She even told my guy that she hopes he gets married soon because she wants him to give her grandchildren. I'm like WHAT! His brothers and sisters are all married and none of them..none..have had children yet. Two have been married for years and nothing and one just got married and now she is hounding him to give her grandchildren. Even his sister told me recently she can't wait to have nieces and nephews. I don't see how someone can call themselves a Christian and completely deny the existence of a child just because they weren't born in the "traditional" family way. It upsets me. Now I'm really unsure if I want to be with this man..I like what we have, but after this I have all of these serious doubts. I don't think I ever want people like his parents as in laws someday. I want to confront them about it but know I will create a scene. I don't know if it's all worth it. I'm a teacher..I work with kids everyday so this one is hard for me. Any advice?