no you shouldn't rush in and tell him everything about yourself. 5 months is a decent amount of time to be with someone but if you are truely interested in a long-term relationship what's the rush? Enjoy spending time with one another and let things proceed naturally..sometimes putting it all on the table at once will put you in a vulnerable position in the end.
No.. I did that with my last boyfriend of a year,, & it bit me in my butt. As soon as we we're done, everyone knew everything about me. But I kept my mouth shut about all of his secrets. I don't know how I did, but I'm proud of myself for doing it :) lol