Entering my 40s and confused

Well, the title pretty much sums up my situation. I've been marriage for 17 years and have amazing kids, but nothing in common with my wife or most women I meet. I'm no longer finding myself attracted to women sexually, I still find them beautiful regardless but that's the extent of it. I honestly just want to feel love which is something I can honestly say I have never truly felt... this all sounds dumb I'm sorry. I just want to live happy and loved. My spouse and I haven't shared a room for over 3 years. I wouldn't know were to begin, or is this where I begin. 😕