The Things That Bother Me The Most, Are The Ones I Cant Fix

So it all started when i was dating my ex boyfriend. he was amazing but after about a year i just started feeling like i had no confidence.i dont know where it started or when but it was like i woke up and things that never used to bother me, started to bother me so bad. Like at that point my mom told me i was loosing my butt, and then all day i was freakin out about it. because it was my only O.K asset. i mean i literally have no chest and i swear all day everyday people talk about boobs.i just have nothing good about me at all. People judge by looks first n im an 18 year old girl who hasn't gotten hit on for 4years. i dont care about bein hit on but it just proves what type of people someone wants to talk too.
Eventully me and my ex boyfriend broke up and about 6 months later i found a new boyfriend. He has two kids n he seems so perfect and i am still with him to this day.While the first couple months of dating him though i happened to see that theres **** on his phone! well after i seen that i just broke down crying telling him "he doesnt like how i look" and that "he'd rather me look like one of the girls he wates in ****" and he apologized and everything. Now whenever he tells me im beautiful or i look perfect i say "i think your lying because obviously if i was good enough for you, you wouldnt have to watch ****." Now after the first incadent he's been more careful but i have caught it like 3 times n i dont know what can be wrong with me beisides me being extremly ugly n not having any curves. Its like one of his friends asked me "doesnt it just drive you crazy when you see a 12 year old girl with bigger boobs than you" and im like "yea it does,it actually makes me want to cry" its just so disapointing..like why did i have to end up looking this ugly..n being so far away from perfect n then theres woman that have everything,a great face n body n everything. i figure everyone knows im ugly and no one wants to talk to me because of that.