Ok I'm actually really really paranoid. I am known for emotional eating and even though I've lost 6 kgs from when I first met him (a year ago) I am on a strict weight loss and training regime now. But I'm scared he will grow tired of me because he's told me that he likes skinny girls.
We have common hobbies, goals, we live together 2-3 times a week (sleepovers). I am 58 kg now (used to be 64) I'm constantly scared he will meet someone new and before I saw a girl comment on his pic and I looked and she had abs and was skinny, toned and fit and I got jealous and upset I went to emotional eat and then got sick afterwards :( then she turned out to be 35 years old (he is 23). And she just got married too so there wasn't anything to be jealous about
58 kg isn't "fat", unless you're really tiny. Plus, since the time you met him and he agreed to date you you've actually lost weight (and almost 10 percent at that). I really don't think he's going to dump you over your weight.
Honestly, I've seen more relationships fall apart because the girl is overly jealous than from weight issues. I think your lack of confidence is something you should work on, because its hard to love someone who doesn't love themselves