<human>: Can you give me the gist of the text in a nutshell?

As the title states I have been dating my gf for 3 years now. I truly believe the first 2 years were the happiest of my life.  I love her. However over the last year or so I have been feeling less and less attached to her. Sometimes when I look at her I feel nothing at all anymore. I really miss the happiness I used to have when I would lay eyes on her.

I feel that we have less and less in common. My job is highly time consuming and I am not really able to talk to her about it with her understanding. The part I feel worst about is that through the relationship she has gained a lot of weight and physically I am less attracted then I used to be to her. I have never considered myself shallow but she just looks different then she used to. I have made attempts to work with her in the gym and dieting but she rarely followed through on her own.  I really just want someone to talk to about how I feel, and I don't think I could with her.
<bot>: dating 3 years and have less in common now then before and I don't feel as attracted to her physically or emotionally .