What do I tell her when she says “I want daddy”?

Kaylee

My heart is so broken for my daughter right now... Just before she turned 10 months old, I started seeing my sons father. We had gone to high school together, reconnected, decided to date.. and so on. After awhile my daughters sperm donor ended up back in jail and that was his last chance, he won’t know his daughter. I refuse to let that in her life. I grew up with my real dad in and out of my life because of drugs, I don’t want that for her. She eventually started calling my sons father dada, she didn’t know any better. He was all she knew and he loved her like his own..or so I thought. Fast forward a little bit, birth control failed and we fell pregnant with my son when my daughter was 1.5 years old. Our relationship just kinda went downhill after that.. he ended up being a true narcissist (which I didn’t realize until the actual end) but I put up with it..sometimes it would be really good, sometimes it would be really bad..physical even. But he never once laid a hand on the kids. That’s probably the only good thing I can say about him now. I tried to leave so so so many times..had mine and my daughters stuff packed so many times..but he would always stop me, tell me to come, promise me things would change.. things would change for a week or so and then go right back..everything was somehow always my fault..no matter how hard I tried to be better.. Fast forward to just 5 months after my son was born..it got really bad. I couldn’t take it anymore..I was so depressed, to the point where I didn’t even want to get out of bed and that wasn’t fair to me or my babies. So I left him.. of course he fought me blah blah blah. But he promised he would still be there for my daughter..still treat her like she was his own. He promised her.. and now because I’ve moved on, because I’m happy again he’s decided he doesnt want her anymore.. and I have no idea what to tell my almost 3 year old when she tells me “I want daddy” or asks me “can we see daddy?” My heart is so broken for her.. and I can’t help but feel like this is all my fault..because I let him in, I trusted him to not hurt her..sorry for the bad language.. it just comes out when I’m this angry and hurt. I guess I just need help or advice making my baby understand why she can’t go with when he comes to pick up my son or why he doesn’t want her anymore... She will be 3 in April. 😞 She’s so very smart and I just know this is going to upset her so much.