He was volatile waaay before you 2 got involved. You are now a convenient excuse to be so volatile... Wether you lied or not, isnt even the issue anymore. His behaviour is. Nobody wants to be lied to, but there sometimes are extenuating circumstances. We lie to protect others from a truth that could NEVER benefit them, and sometimes we lie coz we know how they'd react. Seems like your reason was a bit of both, and it doesnt tarnish your integrity, you didnt do it out of spite. Your bf, needs to man-up