Advice, please.

So my fiancé and I have been together for close to four years. We have two children together who we love with all our hearts. He works and I stay at home with all three kids (I have one from a previous relationship). He knows I appreciate all he does for us. I always try to do special little things for him like cook him a special dinner, leave messages on the mirror, go get him food that he wants, and just special little things. I feel like he doesn’t understand how hard I work all day cleaning and caring for three small children.

We had a talk one night and I had asked him if he was sure this is what he really wanted. He explained how some days he didn’t know if it’s what he wanted and how others it was what he wanted. He carried on and then admitted sometimes he doesn’t know if he loves me because we have been together for this long and because the kids or if he truly loves me. It hurt to hear that but I kinda felt like I already knew how he loved me. I am familiar and it was because the time together. I know he gets tired from work so that’s why I do the special things, yet when I am tired I keep going. I don’t get the same from him. Something in my gut tells me he and I aren’t supposed to be married even though I wanna marry him. I feel like I am the only one truly in love.