Hello all! I am dire need of weight loss support and I've decided to get "online" buddies.

My family and friends are good, but sometimes the people the closest to you can be the most critical too.
I'm 26 years old, and a returning college student. I also work part time (night shift 11pm-7am) at a hospital. I graduate in May 2010 with my Elementary Education degree, so I have a packed schedule!
I don't have any kids, but I've been with my BF for five years, and I'm waiting on the ring... (:
I'm 5'3 inches and 146 lbs. I have a small build, but I carry all of my weight in my chest (38DD... not as great as it sounds) and in my stomach. My current BMI is 25, which is at the over-weight mark.
I would like to lose 16 lbs, to get back down to 130. I was tiny in high school, never weighing more than 115, and slowly over the years it has just crept up and up and up.
I'm in a few weddings this summer and have two vacations planned, and I want to feel good about myself and my body. I'm very self-concious of my chest and it's size, and I feel like it makes me look alot bigger than I am.
Anyone interested in a weight loss buddy system? I just need some motivation and support where I can list what I've eaten and the activity that I've done that day... sometimes I feel like when you tell your family/friends, they think you are obsessed with food and exercise.
I have been trying to lose this weight for two years, and I've never stuck with anything. I have the tools and the information I need to lose it, I just don't have the discipline. As my name states, I wanna wear a bikini this summer!!
My biggest down fall is drinking soda, which I'm trying to cut back on and drink more water. I drink alot of water already, a 32oz jug about 3-4 times a day.
I'd love to hear from anyone! I posted a few "before" pictures so that I can keep track of my weight.