Not attracted to husband! Help!

So I’ve been feeling this way for awhile! I’ve been with my husband for 6 years and the last year I have just felt this way. I avoid sex at all costs! We are best friends and enjoy spending time together. The last year has just been such a struggle!

I really don’t know what to do. I don’t want to tell anyone. I don’t want to leave this relationship but I do miss having sex!