<human>: Ok, so I met her online almost a year and a half ago, we hit it off immediately, started dating after a few days, moved in together a few months later and have now been engaged for two months!

 I am extremely happy, I could not have asked for a more perfect woman, we compliment each other in almost every way and she encourages and supports me more than anyone I know, but since the proposal, with the wedding on her mind and all, she's been getting increasingly depressed about her weight. Now, she is overweight, some may even say obese, however she has a wider and more curvy frame than most girls so she wears it well, and I think she's gorgeous, and I love her curves and thick legs.

 She's sexy to me in both a beautiful aspect as well as a purely physical, but I'm awful with words (it's been joked my nickname is foot-in-mouth...) and every time she feels down about herself anything I say either makes it worse or sounds to her like the positive things a lover is expected to say regardless of what they really think. It's frustrating because I'm being completely honest with her and she thinks it's me just saying it... 

How do I explain to her that even though she is overweight, she's still sexy, and still attractive to me?

Can you summarize the given text in a few sentences?
<bot>: my now fiance is depressed about being overweight and because I'm awful with words she thinks I'm just saying things to make her happy :(