Fat lesbian/bi girls, are you ever insecure in relationships?

Well I've never been with anyone because I'm fat and its getting annoying. I'm sexually frustrated! lol I'm trying to lose weight but it takes forever, I have a lot to lose, and its really hard. I'm still going to do it (not just for a relationship but for myself) but it means waiting until the scale and the mirror make me happy. I couldn't picture myself wanting to be intimate with someone at my weight, in terms of receiving. I'd give but I get the impression that most girls don't want it one sided all the time, or the girls who don't mind having someone else do all the work want some Mega butch type of girl, which is definitely not me. So have any of you faced the same insecurities and did you come with some kind of understanding with your partner, or what? Or does it not matter to you?