HONEST Guys only: What's a realistic approach to talking about weight...

In the process of my one-year relationship, I have gained about 12 lbs. Not because I "let myself go" because I "caught a man" but because I've had one of the most stressful years of my life - -working 50-60 hrs a week and commuting another 10. Anyway, I'm working on getting my weight back down, but I know it REALLY bothers my boyfriend. Not a day goes by that he doesn't mention my diet or exercise plans. Once, he even asked "Why is (my friend) still skinny and you aren't?" To which I explained that she's 5 years younger and also doesn't have a stressful job. Anyway, it irritates me -- I don't want to let him down or get so ticked off with his constant pressure that I lose track of my weight loss goals in frustration with him.

What's a way to honestly talk about my weight gain as a couple?
HONEST Guys only: What's a realistic approach to talking about weight...
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