My boyfriend is taking to my ex boyfriend baby mother. Should I dump him?

Last night i had drove to see my new boyfriend. He ordered food for us and then we had fell asleep. 2 hours later, around 6pm, he sent his ex a friend request on Facebook. He told her that he's waiting for me to leave so that he can go pick her up. So i ended up staying till 12am.. He told her "she's still here. I will hit you up when she leaves. Don't call because she's sitting next to me plus she knows where you live". This is the same WOMAN that SLEPT with his Cousin. I don't understand why she keeps popping up. But my MEN are the ones speaking to HER first. Should i dump him?
My boyfriend is taking to my ex boyfriend baby mother. Should I dump him?
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