Why does everyone do this to me? what shall i do now :(?

[Zara]

My bf of 3 and a half yrs just disappeared on me saying never to ring him again and leave him alone, he's got some family problems. 2 days later he made a facebook page messaging and liking other girls pictures, and it kills me to see that because the girls are much more good looking than me, My ex left me for my best mate and they are getting married this year Why do people always leave me for other good looking woman, it really isnt nice. I am severely depressed, whenever I eat something I puke it back up, and when I do sleep all I dream about is him and other girls togeather. I give my all in relationships I be so loyal faithful and giving and caring. This is going to be the worst year of my life I can feel it, I love him sooo deeply and it kills me to see him flirting with other girls