While a Y chromosome shouldn’t decide whether or not you can be friends with someone, forming a deep friendship with a member of the opposite sex while in a committed relationship has potential trouble written all over it.
Should you find yourself becoming more than “just friends”; you’ll want to check these signs of emotional infidelity before you wreck your relationship:
MOMMYFRIEND 
Oh dear… yeah, I’m there. Thanks for sharing, do you mind if I reblog?