So in order to determine if casual dating is right for you, it’s time to formally define this kind of informal dating process and weigh the pros and cons of this type of casual connection. In the most basic sense, casual dating is when you enjoy spending time with someone and are looking to get to know him or her better, but you aren’t committed to this person in any way.
Do you get to have your regular friend times anymore since there is more physical desire when you see each other?
When you get together, are you always going to end up in bed?
This will also be a problem if your "friend" moves on and starts a serious relationship with someone else.
Of course, it's fine for men and women in relationships to have healthy friendships with people of the opposite sex, but that gets complicated if you've been friends with benefits with someone who is now just a friend.
It sounds like a fun proposition where no one gets hurt, but it's not.