the OP knows what the issue is. She needs to get a gym membership and work hard in the gym, eat healthily...on a sustained basis for a good period of time.
Some people are saying, "sure you might lose some weight but it doesn't mean x, y and z are going to be better as a result of losing that weight". I'd really have thought, (much) more often than not, that having a healthier perception of ones body and general appearance leads to confidence growing, chances of landing that new g/f or b/f or whatever....etc...
I think the above is a bit work-shy, truth be told. It's hard work, weight loss, sacrifices have to be made, you've got to be tough and disciplined with yourself, and maybe not pussyfoot around with arguably weak excuses that the body beautiful or thereabouts isn't what it's made out to be. Everyone wants to look their best, if some have body issues (i myself did when i weighed almost 13 stone 24 months ago, now i'm just over 10st, well toned, athletic and well-defined...), then they need to work at them.
"With pain, there's gain" - something to this effect. Take it from me.