Touch, First, I JUST LOVE YOUR AVITAR!!!
Anyway, I totally understand what you are going through. I have been married for 2 years and since our wedding, I GAINED 30 POUNDS!!!!!! However, I am trying to lose weight for me now. No one else. My husband has never commented on my weight gain and I know he can see the extra weight. I am dressing more "frumpy" these days because of how I feel about my body.
My husband loves me for me - and I feel the same about him. Your boyfriend probably loves you for you so don't worry about any extra weight. If he leaves you because of 27 extra pounds (which I don't think is THAT much), than he did you a favor and is not worth your time. Marriage is hard enough as it is and there are a lot of obstacles in life, so if he can't stand by you just because you put on a few pounds, you probably aren't meant to be anyway.
You deserve someone who loves you, your mind, your sole, your personality, creativity, and lastly your body. That is real love.
LOSE THE WEIGHT FOR YOU GIRLFRIEND!!!!