This is SERIOUS pleeezzz help me help me READ ME READ ME!!!!!!!!!?

I have been dating this guy for about 3 months ,he kept after me till I agreed to go out with him and then things really started to move really fast,we spend alot of time together he even lets me stay at his place while he is working.But I AM REALLY BROKEN FROM PAST RELATIONSHIPS & VERY LITTLE FAITH IN MEN & ALWAYS THINK THEY have an agenda.Even with my crazy antics like leaving nasty notes on his door he still wants to see me.I want to pull back coz it easier to walk away then deal with getting hurt.Now i started pulling back tue have not called him. is 3 days long enough to say he dont want me no more.help mee HELP ME!!!!!!!