Depressing

Starting to get depressed again. I keep thinking that my wife no longer loves me enough to even acknowledge me when I tell her goodbye and I Love You. I had to tell her twice that I Loved Her when I came back to work from lunch before she finally said it to me. I realize that marraige isn't easy, but shouldn't it be easy to tell your best friend/spouse that you love them? I mean it's like pulling teeth or something. I guess she could be tired of faking it and is going to leave me very soon. I just wish I knew what was going through her head.