How to date when you're fat?

So I know I'm fat. I got it. I'm 5'2'' and 170. But I'm also completely tired of being single. I got out of a relationship about 6 months ago, and I realize that I don't know how to date. (I'm also going to the gym to get into shape). So, basically, how do I get from "friend" to "girlfriend"?
How to date when you're fat?
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