My problem is the reverse...
My reading of it is that, barring some drastic physical change/medical problem, its just an issue of not feeling "connected".
Work on normal intimacy (mutual intimacy! not where you're always reaching out and she is always pulling away) first. if you love someone you will naturally want to kiss, hug, touch and hold them. It's where the love connection has kind of waned that people find they no longer wish to be intimate. To work on your intimacy I think you need to work on your honest communication first. That is what I try to do myself.
My best wishes to you!