the way i did it with my girl of almost a year, who we were both attached to... and both loved each other alot...i just told her "i want to take a break, so that i can think about were my life is going, and why im fucking it over so bad, how i need to fix it, and i cant do that with a girl on my mind all the time, and say its just tempary... and then when you ask the other girl out, and if the girl your with finds out, just tell her that your experimenting but you still love her..." thats the exact way i did it... and my ex still hasnt killed her self... but she is still crying so it sort of sucks, and sort of hurts my heart....