Should I give the girl I’m seeing my SBR

Posting here as I trust you guys with this over Reddit. She has talked to me about how much she wants to buy an SBR but doesn’t want to spend the money on the stamp. I’ve had the stamp on mine for a couple years now so I’m thinking about giving it to her. I’m afraid that if we break up she might take it just for revenge but I don’t want to ruin the relationship by telling her that.