Help with parents!

So recently I've been getting a lot of crap from my parents. They tell me that I'm very lazy and gaining weight and stuff like that. They told me today that I have a very bad taste in men and that my boyfriend is very lazy and a bad employee at his job at taco bell (he is late occasionally but not all the time). My boyfriend is 22 but does not have his GED and I am 19. I still live with them and my boyfriend lives with us.

I just need some help as to why they do this. I think that as long as my boyfriend and I are happy with our lives right now then we should be fine. Everything has a time and place for different things to happen, right? Here's a picture of my body and a picture of me and my boyfriend. I'm very happy with how I look and who I am with.