What the fuck am i thinking?

Yesterday evening I got a strange idea.. I don't know why, but I thought to call my old girlfriend.
We were not together, but for 3 years we shared all, officially we were just friends, but i think we were more than friends; I don't know what she thinks about.
I haven't call she, but I'll do it in few days.
On this time, I have not yet explained why this idea is so strange.. because she is a mum now.
She got a baby from a relation of three years, ended last summer (if I am updated); he is a very bad person, I don't know what she found on him, but for me he is one of the worst person I ever met; he is always drunk, he uses drugs, he beated she for a long time..
I think I will call she, because more than ever I know I loved her.
I will let you know.