I assume a V relationship-are they friends? Do they even KNOW each other?
These things matter in terms of dealing with her insecurities.
Also-she says she fears that you will run off to "her" when she's fat...
YOU say that you fear you may have to give "her" up....
Did SHE say that she wanted you to break it off?
i ask, because I felt that way in a MONOGOMOUS relationship during EVERY pregnancy. I expressed the fear-every time I saw what I perceived as a hot chick.
And every time was reassured that yes-she was a hot chick "but not as hot as you angel, you burn me with your sexiness" usually accompanied by a soft touch to my HUGE belly.
If she's needing reassurance, she should say so. But you shouldn't feel like you have to SOLVE it. Just reassure it.
"Love As Thou Wilt"