How to regain my girlfriend's trust and save my relationship

I started dating my girlfriend early this year and I've never been so close to anyone before in my life. She makes me feel really comfortable and able to share past experience about my family that I've never spoken about before. Last Tuesday I lied to her when we were out for dinner and my card was declined. I said I had had money defrauded from my account and that I needed to cancel my card. This was to stop her from worrying about me overspending my monthly budget. She thought it was a bit funny and found out a week later that I had lied. She's now feeling completely betrayed that I told a lie and is considering taking time apart to think about whether she can trust me again. I'm devastated because I can't bear the thought of losing her and I don't know what to do. If anyone has any suggestions, please let me know! Thanks.

I think it's best that you communicate with her about anything before you do something about it. Instead of cancelling your card so your girlfriend didn't have to worry about your overspending, you could have talked to her about what you can do about your overspending, instead of try to hide it, only to get caught about the lie. I say, just leave her alone for a while, tell her right now that you're going to work toward her trust again and that next time, you will do better to communicate before you take any action. It's important that you consult her before doing something when you know she has a problem with it or if it somewhat relates to her.