Can you hang out with your boyfriend when he has mono and you dont?

Mono is passed though an infected person's saliva, hence the name "kissing disease", and doctors will usually suggest not to drink after them or kiss them for at least a month after they have become ill with the disease. You can hang out with your boyfriend and not get sick as long as you do not kiss (swap spit if you prefer) or drink after him, which is the most common form of passing the disease. As long as you avoid contact with his saliva, it should not be passed to you. Once he's cleared by a doctor to be mono-free, then you can kiss him and drink after him and whatnot, but save those activities until he is medically cleared.