Should I move forward with her? I don’t want to be hurt?

Hey all. I’ve started dating someone a few months ago and things I have been well. Until recently she mentioned her ex and she still talks with him. I was upset when she mentioned this, but she explained it’s just friendly, they just check in with each other and that’s it. However, their breakup seems to make me curious if there’s underlying reasons why they keep in contact. Her ex is a pilot and his job sent him internationally, and distance wasn’t something she could handle well. Ironically, they had broken up before due to distance until she moved to the city he was in. They dated when she moved but then his job yet again came in the way. She said she hang up with him since almost close to a year ago and they’re just still friends. I really like her and I don’t want to get hurt. I’m not successful like her ex, and the fact he still texts her makes me worried. I’m scared of getting my heart broken. But she says she doesn’t want to be with him. Should I worried about him?

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She also was the one who said distance was difficult for her, her ex was the one who wanted to get back with her when she moved but as his job made him travel a lot, she felt it put a strain on their relationship, but fact of matter is he lives in the same city and is home occasionally so makes me wonder why she won’t still see him when he’s home. Her ex apparently tried to date someone else but he broke up with that person as he told her he still had feelings for her & found it difficult to mo
Should I move forward with her? I don’t want to be hurt?
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