what have i done? sad, guilty n angry!

I've texted him saying that im going to give up on him bcuz he's upsetted me twice in a row...
but what i actually wanted to do was to step out of the relationship between him and his girlfriend...
what he txted me back txted me feel, sad and angry...

he said " do u know how terrible i feel u said tht! i hope ur happy cuz im going to dump her ASAP!"

as soon as i saw tht message, i felt tht he's angry wiv me n WHAT HAV I DONE???? is he dumping her cuz of what i said??? i felt really stupid n guilty!

but the second part of the txt really makes me angry! he said "i hope ur happy cuz im gonna dump her ASAP"

if i ever breaks ppl realtionship, i will never feel happy! NEVER! if i wanted to break them up, i wouldn't hav helped them to go bck out when tht misunderstanding thing happend b4, would i?