Sasha,
I feel like that sometimes, because I don't get out much, and therefore don't have a lot of things to talk about. I can talk politics, and birds, or needlework. That doesn't make me very interesting, except to someone who has the same interests.
Perhaps you would feel better if you were with someone who shares your feelings about many things? If you get out and do more, you will have more to talk about... but its hard when you are a single parent , sometimes.
What kind of things do you like? Do you read books, sew, cook, or like to hike? I am happiest and feel alive when I am with someone I can relate to.
Don't doubt your self.. . maybe you do not have that much in common with this person. And there are many who value good moral choices, dear lady.