Juan,

I have only one peice of advice and it will solve all of your other concerns. Get out of the relationship. If you are not fond of your woman's child then you do not belong in a relationship with her. It is not fair to her, it is not fair to you, and it is especially not fair to the child. When dating someone that has a child you are dating both as they come as a package. The child is totally innocent here and it seems that you may not be fond of the child as you see him as part of the father who you are resentful towards and threatened by. The child deserves to have his daddy playing a significant role in his life, if you can't handle that then your resentments towards both the father and child as well as your woman will continue to grow and manifest into God knows what. Maybe you would be better off dating someone with a little less "baggage." All three of you deserve a relationship that is free of resentments and harbored mistrusts and is based on unconditional love.

Rod
Rod
Yes, I am a Pirate Two Hundred Years too Late