His love for her

i need some help with this topic. It is Mothers Day today and my W and I spoke last night (we are in a LDR) that he was very sad and cried all day because he would be going to his LWs grave with his son and stepdaughter. I understand that some holidays and dates and birthdays are going to be hard. But, last night he admitted to me that he still loves her. I get he will always love her, but giving the factor that him and I are going to be together for a year now, he's never said he loves me. His response to me a couple of months ago was "sooner rather then later I'll fall in love with you". That never sat pretty with me. We have been talking about me making the move to the MW in a couple of years and possibly starting a family together. But he continues calling her his wife and the Mrs.'s which hurts me. He claims he's ready to move on but I don't think he is. He also said he feels guilty for not missing her bc in the later years she completely changed so he's missed the woman he married. Which brings him all the bad memories of her. I know for a fact I make him happy and he's never been so comfortable in his own skin since he's been with me and we both feel like we were both meant to be together. I told him I understand he's going to love her forever. But why can't he realize that he can love someone else too. He told me he wasn't going to speak to me at all today bc it's morhers day. I agreed he could spend te day with his family but I feel like he's shutting me out too. And he'll only reach out to me when it's more emotionally convenient for him. I don't think that's fair and I don't think its right for him to shut me out like this. I want to be with him through the good and the bad but it seems to me he only wants me around when he wants me there or when he needs help with his son and sometimes home life. I don't know what else to do. My emotions are all in a jumble at the moment. I've never been with a widower and I don't know the dos and donts on coping with it all.