No you don't Personally, I am not specially attracted by muscular guys or guys with a highly exercised body... But its clear everybody has a taste, nothing is a requeriment. Many will find in your appearance (and/or personality), the perfect person.. but before accepting someone's love, you must love yourself first..you know, that classic quote; "How can you love someone else, if you can't love yourself?"
Just a tip about getting more muscular... If you just want to get a little more toned start doing pushups, crunches, and maybe some running. There are iPod/phone apps that will count your progress and help keep you motivated. This sure as hell won't make you look like a body builder, but overtime it will make a difference if you are currently doing nothing at all.
