So lonely but keeping my faith in Christ

I am engaged but I feel so alone/lonely all the time. I feel like I have changed my entire life to fit his and to make this relationship work including losing most of my friends, my freedom and sense of self. I didn’t realize it at the time of course but my body did as I went through the worst time of my life with my mental and physical health. He was supportive through it as best as he could and is generally a great human but I just feel like we just aren’t meant to be and being in this is just so painful. I’m keeping my faith in Christ and surrendering all of this to Him. I’m just tired at this point. This is all obviously so much more complicated and detailed than what I’m sharing here but I just wanted to come and share anyway. I just feel really alone and stuck.