Eating problems

I have problems with eating and it's not because I don't want to eat. I wish I could. Eating is often just like hell for me, my texture problems make me constantly gag (and no I don't really have safe food, all food can cause problems for me, just some more than others) and it's unbearable. It makes me have to give up eating foods even when I like them. It's also embarrassing in public or I worry about offending somebody if they cooked it for me.

My one preference is for sweets and I have the least problem with them but they're not very nutritious and they don't count as a meal.

Most people do enjoy eating food and I'm very jealous... does anybody else have this problem?