Is my ex trying to make me jealous?

[Talk about others talk about I.]

We just broke up. Now I look on his facebook page, and find out he was talking to girls. I know I didn't own him, but he had be talking to girls with pictures of them in their underwear and bras. I broke up with him because he became jealous of this man looking at me. Now I found out he had been talking to these girls on facebook. Could it be he is trying to make me jealous? I'm 22 and he is 27. It hurts he was talking to other girls dressed like this.
Additional Details
He led me to believe that he didn't even have a facebook account.
He hasn't talked to them, but have them as friends on his page.

[Matthew]

play the same game and see how he feels; he's trying to make u jealous,; trying to evoke some sort of reaction from me. Very subtle; he wants to see if he still has control over u, and perhaps wants u to give him an ego boost by chasing him again.its called game,mind game;either way, playing games is not healthy. do not let him suck you back into that type of relationship,undo ur scceptance on his fb;wants to get a reaction from u or hes moved on,
you still have unresolved feelings...If you feel a need to move on, then you can choose to be proactive, rather than reactive. Being proavctive means making quality choices that lead to better outcomes, living life as fully as you can, and letting go of past hurts. Moving on means letting go...do you think that would be healthy for you? It happened to me, the moment i truly cut my ex off, stopped checking her fb/calling and txting I felt 10 times better.. Trust me
Guessing about all this and turning to strangers for the answers--or rather, the validation that it is what you want it to be--is grasping at mist. The only way to know for certain is to talk with him. No one else can know her motives any better than you do.its not the question of jealous its the answer of your own assumption;Know that whatever his intent is, you will be okay in the long run! I know you don't believe it enough now, but you WILL love again...yes, you will;The immaturity thing is an obstacle for both of you. However, all life's experiences contain lessons to help us grow, so either way it goes, there's something good that can come from it. Certainly, the lessons of your life will resurface again and again until you get it and apply what deep truths you've learned to your life. It's an ongoing, inescapable process...