Competitive dancer w/ a skinny partner

I am 5'4" tall and about 149 right now. I have wanted to lose some weight because I am borderline obese for my height with a 25 BMI. I have lost about 6 pounds since Christmas. Goal weight is 136. My new dance partner is 6'1" and athletic but skinny. Unfortunately, I look large next to him, and since no woman wants that, especially when competitions include photos, posted everywhere, I am using this for motivation. I exercise 6 days a week from 90-120 minutes, so it's not the activity, it's what I am eating. :/ I hope to continue my weight loss journey and reach my goal by Memorial Day 2014.