Context: When it comes to his babies mamas I believe those are over and its nothing . But my concerns are his ex that screwed him over , some girl that he said asked if they could just get together to do it , and just any female . I ' m a very jealous person to cuz of what i ' ve been through . I have to believe what he 's telling me too .

Question: What may be the reason for them being a jealous person ?
Options:
0. None of the above choices .
1. Their mom was cheated on .
2. They have a wild imagination .
3. They 've been cheated on .
Answer: 3