From a guys Perspective
If a guy makes advances toward you then obviously you have Characteristics that he likes. Don't let your self-conscious thoughts stop you from being intimate. I have found that women that have been Bigger put a lot more effort into pleasing their partner than women that don't have to work as hard to attract a man. Honestly one of the few turn offs for me in the Bedroom is a woman that wont let her self go and enjoy the moment and instead is constantly wondering if i find her attractive. We all have body issues whenever I was in the Marines at 162lbs I still thought I was fat. I am going to give you the Ultimate thing to remember "Fake It Till You Make It" well don't Fake everything lol!!!