can an ex take a gift back
no.
If the gift is in the form of an engagement ring, yes. Some gifts you can take back.
Yes.
Take her on a nice vacation to Florida.
because he realized what he lost and whats it back
probably he is gey
That could be important to her future lover, knowing that she was a good catch, since the ex keeps coming back and back and back....
maybe you did something bad in the past and shes really angry about it and she just wont take you back for it
black mail him or jump him and take it Mexican style
take all your clothes off at him
If your ex doesn't like you, there is little chance you can win her back. One way you can try is to take her on a date.