QUESTIONS ABOUT MONO!!!?

This guy and I like each other but i don't think i want to date him because he had mono like 4 and 1/2 months ago so i don't want to get it. He said "I don't have it anymore". But still i don't want the ******* disease. Can it spread to me still? he doesn't have the symptoms? How long till he's not contagious? Is it true it keeps coming back? Can somebody give me more info and firsthand experience about the disease. Thanks.