My boyfriend of 2 years has three kids. One from a previous marriage, and two with an ex gf. He is 10 years older than me. I am 30 never been married, no kids. He is 40, married & divorced once with 3 kids. For the first 4 months of our relationship I did not know he has kids. I had my doubts, and asked but he denied it. I ended up finding out some information and confronting him and he then admitted to me. I was devastated to say the least. Since then I decided to not give up. swallow my pride and give it a shot. Two years later I am still with him. I help him take care of his two youngest kids that he has with the ex gf and spend more time with them than their own mother. I do their homework, make their lunches, take them to school on ceratin days and watch them multiple times throughout the week. He works nights and his gf is a nurse. She is the kind of mother that makes her work schedule before she knows who will be able to watch her kids. She is a HUGE issue for me. She is incompetent, inconsiderate and selfish. I can say these things bc I have seen them all, they are not being said thru anger towards her. When she calls last minute, I am the one that ends up watching the kids. I have no contact with her, nor have I have I ever since we started dating 2 years ago. I do not trust the relationship he has with her at all. They have a very "heated" relationship where they always text and argue back and forth. They rarely if ever talk on the phone and if they do, he leaves the room. I feel as though our relationship very much suffers bc of her. He claims he is not going to let his kids suffer because of her, but I just don't buy that excuse. I really do feel he needs to stand up for our relationship and our time together and let her know that she needs to be more responsible. Due to past instances, I also do not trust whenever they are together. They have been on and off for over 8 years until he met me. We broke up for a short period of time last year just before Xmas and I found out that she was over there on Xmas day. Lots of drama and baggage here, but I honestly do love him. What can I do to make this situation better for me and our relationship's future?