In such accidental exchange of fork and sweets your risk for getting HBV is minimal, close to zero.
Your risk is probably <.000000001% if it makes you feel better. People who kiss or have oral sex still have very low risk of transmission. In your case, you are fine so don't worry.
How about protected Sex?
How about Mutual mastrubation with vaginal fluids?
Unless your condom broke, you're safe using protected sex. If vaginal fluid touches only your finger and as long as there are no cuts or entry point where it can enter your body, you're ok. Viruses are usually found in blood but there's always a chance in semen and vaginal fluid. Different viruses can survive differently outside the body. HBV can survive up to a week outside the body.