Insecurity is killing me.

So, the guy I'm crushing on has stopped being as flirty to me. It kinda bums me out and makes me feel ugly. I know that is so childish to say but that's how it makes me feel. I just wish if he was attracted to me, he would somehow let me know. I am not asking him to cheat on his girl but it would be nice to feel pretty. I just wondered what happened to make him stop acting like he did around me. Recently I haven't been feeling very pretty anyway and I have been stressed. Ry won't leave me alone and I feel he doesn't respect my boundaries at all. How is he supposed to get over me when he keeps getting in contact with me? He is upsetting me. Ran made me upset because she says I have been acting like a jerk. I don't think she's right, I mean I have become a smarty pants but not a mean one. She did apologize to me but  I just feel so confused. Ugh.