Umm..

Sorry this might be kind of long. A little back story, last summer my bf kicked me outta the house to take his ex back (granted they have 3 kids together) just to make her leave 2 days later for me to come back. I found out that we were expecting a baby together. His ex went all craxy and abused 2 out of 3 of his kids and those 2 landed in cyfd custody. My bf completely stop talking to her the whole time they were in custody. Now that she was granted the kids back they are like the bestest of friends. He only talks to her on the phone when im in a different room are busy taking care of our 6 month old son. He only texts her when hes at work. This is the same bs he was pulling befor he made me leave last summer. He never tells her anything when she starts acting up but he has a whole hell of a lot to tell me. The other day she called him crying and when i got into the car he was crying with her, he gets mad at me for crying. He thinks im being a child for getting mad that he talks to her. I dont care they talk but damn why does it have to be when im not around. Do i have a right to be upset about this whole situation?? What do you guys think is going on?