Search Results: seducing an ex

We broke up at exactly 9 month together in Augest. I went back to him 3 times, last time was a month before. He was showing different attitudes after we broke up, he cried when I was bringing up how sorry I am to be too clingy, he would still show his affection (do not know the true intension as we had sex for the 3 times when I went back to give him chances). However at the end he still threw some bs to me like

"I cannot take any responsibilities"
"We are never happy together"
... Yeah I was too silly that I thought he was going to get back with me cause we had sex... and he would BLAME me for seducing him...
then he turned to AN ASSHOLE in my heart cause 1. my friends 2. he was really being a jerk
One day after maybe 3 weeks I have not been going back to him, I saw him in school (same college, which sucks a lot). I was about to ignore him but it was too rude so I just smiled at him and he smiled back. He also glanced at my male friend who was next to me.

Then he texted me the same day and said
"Just so you know last time I fell asleep that was why I did not reply you and it was good to see you smile in school and I still see your car every day."
(Last time I texted him because I saw him being so negative in his life and I wanted to know if he was okay but through texts he was not interested to talk to me, so I asked him if I can call, of course no reply too. At the end I told him please don't talk to me anymore, for the best of you and me)

And after he texted me just 15 mins, my girlfriend texted me said HE INVITED HER TO A HOUSE PARTY.
She did not go and I was pretty upset.

To be honest, I still miss him, a lot, like every day.
But I accepted the fact that this break up indeed helps me a lot, to get my life and friends back together. I am a better self now, and last time I walked out of his house, I promised myself would not talk to him unless he initiate the conversation.
Is he just stirring my feeling? cause he did not really say anything like I miss you