Should I accept him?

I have this boy that I used to have feelings for him and I ended up confessing and he rejected me saying he don’t like fat girls that was two years ago , I admit I was fat at that time for some medical reasons that I took a year off to solve and now that I have lost all my weight he came to me saying that he has a crush on me and wanna go on a date with me
I don’t want to accept him but he’s insisting and he says he was dumb when he rejected and he has changed his mentality
Should I accept him?
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