is it best to walk away from a love triangle?

Yes, always best. Walk away with dignity before it's too late and you are made to look an idiot.

What do you want from your relationship? Fun times and sex or a truly deep relationship. If you are not the kind of person that likes to get that deep then it is ok to stay in. If you want a deep connection and possible LTR then you might want to look elsewhere. In a love triangle the person in the middle is sharing their affection and can never give fully to the other two individuals the love they deserve.

Think it over.

sorry, but in my experience, anyone who stays in the triangle must be barmy

Love is a two way thing - not a three way

sometimes. you could be talking about anything though. you, him and his love of his work/family/friends. or you, him and his love of drinking/drugs/partying. it doesnt have to be about another another person in the mix. it could even be his own ego/pride or even religion/culture that makes it a threesome difficult to remain together.

Heck yeah...I refuse to play second fiddle...but if u don't mind, stay.

definitely you will always end up being the one who is hurt.

Not always.