How to keep a thing a secret?

[Veil]

The demon Bael.

This is a little ritual of my own making, maybe you can make use of it:

Technique: spell of forgetting / memory binding / remove suspicion

A spell to make people forget, to remove suspicion from you, to bind the thoughts or memories of others in your favour, using the powers of King Bael. Copied from my journal to make into its own post. The powers of Bael are — To remain unseen when you would otherwise be noticed. To make somebody lose interest in you and your affairs. To bring confusion and torment to anybody who enquires about a subject that you wish to remain hidden. To make a thing or situation to appear as something other …

I also echo what @Mulberry said. If you’re concerned, have this conversation with your boyfriend. It doesn’t need to be a big serious “we need to talk” thing. Just let him know that you briefly dated another person when you and your boyfriend were not together.

You may even want to go in the other direction: instead of looking to keep this thing a secret, work some rituals to ensure your boyfriend is accepting, understanding, and sees things from your perspective.

This seems like something that is troubling you a lot, so you could also try both approaches (to keep it secret until you are ready to tell him, and to work on your boyfriend being open/accepting/loving when you do tell him). Then you can be honest with him, and you won’t need to feel guilty or like you are hiding anything.

Good luck.