What am i doing wrong?

Ive broke up with some one 5 weeks ago he broke up with me rather, im almost 29 years old and basically i didn't trust him it had gone very bitter, i had to move back home with my parents in the mean time i got chatting with a guy i hadn't seen in years, we were texting and chatting on face bk loads, he then asked me to go out last week we had a fab night met up again at the weekend then all of a sudden he seems not intreseted all we did was chat and few snogs thats it! i never once gave the impression i wanted a realtionship from him as i was trying to play it cool and not be needy, anyway my question is a lot of peopel tell me im greta looking and have a great personalty and people be lucky to have me ect.. but why dont people seem to want me then? im 29 im not exactly young im really envious of people i see my age married and settled down yet i cant even hold on to a man, my ex and i nearly had our house bought yet her i am back to square one feeling emty and rejected twice, i know i have no confidence which is why on the date i acted very sure of myself yet it STILL DIDNT work, im starting to wonder am i just going to be alone forever