Hi A., you related him as your fiance, and I believe you are feeling the way you are becasue you know he's not really yours, is there a reason that you and him are not married? I lived with my husband for a year before we got married, and even though he did nothing to make me feel insecure I was, with out a marriage license, you don't belong to one another not legaly anyway, I think also you feel like she is stepping on your toes. You have to make a decision, to not be negetive,
if she wants him back, then deal with that when the time comes, but don't barrow things to worry about, be her friend, the only difference now is you and her will have to co-exsist with the responsibilities with the kids, you will have less resposibilty than what you have had, but you can make that work. Their a family, that'sot going to change, actually, I'm not trying to make you feel bad, but not being married to their dad, you are not really their step mom, it's a heart issue and I understand that, but I would want something more legal to make you feel more secure. The Holidaya are coming up, you have a new baby coming, why not get married, and make this holiday Season about family. Don't let fear creep in, it's not good for you or your baby. Here's something that one of our Pastors ay church said like 10 years ago and I have it laminated on my ket chain.
Fear is false evidence appering real! I hope I didn't come accross to harsh or insensitive like some hav been in the habit of accusing me of, but I wanted to be real with you, you are only two years younder than my oldest child, and if my child was in the situation you are in, I would tell her.him the same thing. I do wish you the best, if you would like to talk furthur I'm out here. J. L.