I don't know what the future holds as no one can say that. But I can say that he has made his wishes known and that means with girlfriend. It doesn't matter why they are together just that they are. It doesn't matter if she is like you because in the end she isn't you. I would be fearful that he is saying certain things to try to have this transition go less painfully and see his son. If you forget all the talk about why he is with her you will be left with one thought - he is with her and probably staying. He has said at least twice that this is the "path" he has chosen to take. That is all you need to know because I doubt he is going to offer clarity. Put a period and try to rebuild your life. You don't know that you won't love someone more. As much as you want him this path is obviously widening. You have to let it go and find someone totally committed to you and your son. The longer you spend analyzing everything and thinking about their relationship that is time that could be spent meeting someone else. You have to let this go. The only relationship he should have is with his son. There is just too much damage done. Sometimes relationships end before the feelings do. This is one of those cases. When he sees his son remove yourself from the details of this relationship. If he offers them avoid the temptation of listening. At this point even an affair doesn't matter. They are together and he has chosen his path. Dont find yourself waiting while he sees if it works with her. You should never wait on the side lines while someone else causes confusion.
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