I feel like I'm too co dependent on my partner :(

Me and my other half moved in with each other last year and when we moved in together a lot of my friends just stopped bothering with me and stopped making the effort. It's really upset me because I feel like I have no one anymore. I'm so happy and never been happy in my life and when I'm with him I'm on top of the world. However he works a lot and when he's at work and I'm by myself I always keep myself distracted but I just feel so upset and sad and depressed then when he comes in I'm all clingy wanting cuddles and I feel like he's been away from me from years. I dread when he next goes and leaves me. I miss him so much I get so depressed. How can I get over this. Iv tried making new friends taking up new Hobbies but all I want to do is spend all my time with him :(