I don't think you're making a big deal out of nothing. It's very important to be able to communicate in a marriage. Will he be able to say I love you to his children? I think that if I were you I would try to get the both of you into counseling so you can reach an understanding before getting married. It's extremely difficult to live with someone who does not show their emotions. I know. I have. For thirty years. I still care about him but I lost something along the way because of it.