How to tell parents I'm suicidal and should I?

Hey I'm sorry to hear you are suicidal:( but this is what you should do...
Sit your parents down at the same time and tell them that there is something you need to get off your chest and explain to them that you need help with a problem you have .
Right after that tell them how much you love them and that none of what I'm about to say has nothing to do with you guys ( you said they were good parents)
for a good conclusion and verification that you really want to get help and that you want to get better
Try saying something along these lines...
I know how serious this is and I need to get to the bottom of it because of i don't recover or get help my suicidal thoughts will get the best of me and I don't want to leave you guys .
I hope this gives you some help !

Please contact me back I would love to see how it goes for you (:
And remember your life is precious and whatever your going through right now won't be worth leaving for amazing moments to come