I know the feeling, I lost about 40 lbs a little over a year and a half ago. My wife then had our first kid, the weather got cold so I got lazy about riding, then Thanksgiving and Christmas, and 30 of those lbs came back because they loved my middle section soooo much!
I have lost 8 lbs so far, and I know it will be a "painful" road back through the other 22 lbs, and then the other 20 I want to lose. I know I need get on a bike (because I hate running) and watch what I eat, so that's what I am going to have to do this summer!