Do you talk?
Go to her, tell her you want a hug. Standing, a full hug, with handrubs on the back, and with no hurrying, and not trying to "make out."
Then sit with her, and share with her what you have just shared with us. Ask her what you can do. Maybe you need regular times of talking. Maybe you need to do things together. Maybe you need to do things she likes to do, or the both of you like.
Do you have financial or other worries that are causing stress? Are you doing things that she may interpret as you don't care as much for her?
Perhaps some renewed commitment on your part is needed.
Also, little romantic and/or thoughtful things can signal to her that you love her, and that she is important to you.
