Long read, need to be us again

What are some ways we can get back to being us? Weve been together for 2 years and due to some fortunate circumstances we are both able to be unemployed at the moment (we have money, Bill's are paid) we will soon be working on our new career adventure together. We are not yet married. I have 2 kids with my ex. He is not in the picture. Anyway, we live together and even though we spend most of our time together I still feel lonely. We literally hardly talk until we go to bed, only kiss goodnight, dont kiss at all during the day and maybe hug once.Hes very sweet and quiet and spends alot of time on his phone. Which was getting to me so now he reads. I know we both need time to ourselves but for the first year and a half we loved spending time together now I just dont know if I am just starting to be bothered by his quietness or if hes pulling back. I've tried talking to him about it but he has changed so much to learn about this relationship stuff that's new to him and I dont want him feeling like hes not enough. For those who read my poll about there being someone better for us now I feel like I'm not enough for him and we are falling apart. I want us to work. I need us to work. What can I do to bring the spark back. We went on a few day vacay just us and it was great. Until he said that and then that's all I can think about now. Any advice is welcomed. Thanks