To try or to break up – 覆HBB


Few months ago we nearly broke up because he had the 3rd person.

He said this was solved, they become friends. And he acts like a good bf to me.
We are together, but I do not have much confidence on him.

They see each other everyday in the workplace, have group activities with the whole team together, and I know they still have connection like phone call.
I sometimes think either to trust him and improve our relationship,
or to break up for I cannot totally believe him anymore.

Are most men greedy? They would rather maintain relationship with 2 women, instead of dropping off one of them?