When should I stop losing weight?

I don't think i'm too skinny, but my boyfriend does. I'm 5'2 and when we started dating in last january I was 150 pounds, and now I'm 97, I just thought i should mention that before everyone says he's too controlling. What I want to do is keep losing weight, but it scares people when i say that. Please don't make fun of me in the comments and say things like "real women have curves" it doesn't help.