Meeting my ex for the first time after 2 years

I'm just pathetic. i imagined the scenario over and over in my mind from the day she said she found someone new till the day i arrived back in Malaysia. It was just as i imagined. There i was sitting with my old bunch of friends at the mamak stall when she and her boyfriend would sit at a table near us. i got up went over and said hi to her, then look at her boyfriend, laugh like a hyena and then proceed to kick his ass. then i turn to her and say "Good riddance". but that was not it went. (oh and here's a brief recap of why i turned 18SG, when i left malaysia for australia 2 years ago, my status was "in a relationship". about two weeks later my status changed to single because she hooked up with somebody else and she had the nerve lie about it and say asked for the breakup on the basis of our differences) anyway it went like this instead.... i was sitting with my bunch of friends when my friend pointed that my ex, her boyfriend and a couple of their friends were sitted two tables behind me. They told me not to turn around but i did, i was curious what she looked like after 2 years ok... i didn't get a good look though cos the indian waiter dude was walking by. so there i sat for 15 minutes and i had a numbing feeling and my heart was beating a beat faster. i guess it was the anticipation of finally meeting her face to face after so many years (2 years is a long time k). finally the moment arrived when we paid for our drinks and walked over to say hi. it was surreal as if i was on automatic shift. i just said hi, smiled, shook hands with her boyfriend (which reminds me i'm gonna go wash hands now) and left. walking towards my car i felt a bit sad. She has moved on, why can't i move on. i guess every girl that has been in my life somehow stays in my life... always coming back to haunt me... never letting me forget.