I'm not good enough....

I dont know what to do. My husband and I were best friends together for 6 years. Now it feels like he doesn't love me as much anymore. He wont listen to me, he gives up on everything and I feel like he's giving up on us. 😔😭 I'm so stressed and feel like I'm not good enough. He doesn't want to have sex with me anymore and we are going on 2 and a half months of nothing and he barley kisses me. He made me feel so good all the time and since January everything has been changing. I just need someone to talk to at this point. What do I do? This picture was taken before everything started changing. Our Christmas cruise.