Just dating? I don't know. It just makes you jealous.
Cherish it if you want. Your heart will tell you what to do. If you still have feelings for her, just tell her clearly. If she is still in love, it is reconciliation.
If she doesn't love you, don't be sad, because it's not worthwhile to feel sorry for someone who doesn't love you, because she won't feel sorry for you, and she will only live better than you. So, you should live happily now.
Finally, I wish you happiness