What advice can you give me? Do you think my Ex is talking about me?

I am on my mother' s page. I am is 22 years old and was involved last fall in a relationship in College. My boyfriend and I at the time became very close, and even talked of marriage after College. The thing that broke us up is my Ex (who's in a Fraternity and a leader, and I am in a Sorority) was seen around the Campus with another female who was once his ex. My friends and even friends of us both told me about seeing my then boyfriend around the Campus with this girl, and how he is known to go from female to female before he met me. Anyway I confront him about each situation that he was seen with his ex. He told me that I need to trust him. Then one day he gave me a friendship bracelet saying that we're not broken up, but that we need a break apart. I was so hurt, but he assured me it's just to focus on our studies, and will make our relationship stronger. I went to a party and saw my then boyfriend dancing with the girl, and the girl was dancing all sexual on him, and he had his shirt open. He assured me it was nothing but they was having fun. My boyfriend although on this break was still intimate with me. I then learned from him that he had cheated on me not with his ex but another girl. I was hurt and was crying so hard that felt like I couldn't breathe. He promise me he was so sorry, and seem to mean it after days apart, we then decided to work things out. Then he told me again that it happened again a month later. I told him that it was over. He then started seeing the girl He cheated on me with. I was so hurt and am slowly trying to move on. I started seeing this guy who was about to pledge the Fraternity he's in, and this guy and I was hugged up at the party, and my ex text me the next day saying if you are seeing that guy or sleeping with him. He can forget about being in the Fraternity. My ex text my friend guy the same message. Anyway at another party my Ex gets drunk and says that he was about to marry this girl really loud to everyone but she never trusted him. (Talking about me). Recently we were texting each other because he keeps playing with her emotions giving me the impressions we had a chance we're getting back together, and telling our friends. So I decided to end this triangle of him not choosing and deleted him off of my Facebook, and told him I have a right to see who I want. I stopped all communications 3 weeks ago. 2 days ago recently I saw on his page where he posted a remark on his picture on Facebook. It says THE WORSE FEELING IS FEELING LIKE YOUR'E PAYING FOR EVERYTHING THE EX DID. His current girlfriend says on there That's how you feel. Could he be talking about me or of his girlfriend of now 5 months who has been known to cheat on him, and also was having problems with her ex before him. I know I should leave this alone, but I wondering Could this be me he's talking about?