My ex gf wants me to be the godfather of her baby

I dont know how to feel about it or what to say.

When we were together our relationship was great and when we broke up there was no hard feelings or anything.

We keep in contact and we are good friends but this is kind of odd to me that she would ask me this.

Hell even her her husband is ok with it this is a lot to process.

Anyone else have this happen to them?