Cold sores

Lj • 23. Married 💍 Cat mumma 😻 Baby boy due Dec ‘19 🥜

Can cold sores only be transmitted when there’s an open sore there?

Kissed my hubby yesterday and there was nothing there (he apparently used to get cold sores when he was young), he only had a sore appear today.

Does that mean I’m going to get it or not? I’ve never had them and don’t want to start now that I’m pregnant.