Talking about emotions and logic, especially in relationships between guys and girls, the term I usually understand is that

“… emotion will poison your logic …”

as a thing to watch out…

But today during a chat, another term is discussed which is

“… watch out when logic will poison your emotion…”

…

and I feel it’s quite true. I tend to forget the 2nd one and focus one the 1st one. Actually the truth is that both emotion and logic are there to balance each other out. 

So watch out, sometimes your emotion is not the one to blame and watch out for what might be the poison to your decisions.