Most Helpful Girl
Yes but not for longer than 3 months or so but women aren't the same as men on this. Women can grow feelings or an attachment slowly or with time and even become attached to men we aren't compatible with if sex is introduced too early.
Men in my opinion tend to know pretty quick if the girl is someone they could love or not and unfortunately it isn't something we can pick to feel. So you have fun and are comfortable with her, maybe the sex is okay but no spark? Do you miss her when you go a few days without her and think about her first thing when you awake?
If it is mutually casual and she isn't falling for you then probably no harm but if you stick around knowing there is no long term viability the chances increase she will grow feelings at which point you can sever things but the damage is done and she will be left hurt and confused.
Women 'grow' feelings men don't so this is where the trouble of the game you are playing comes in (though no fault is implied).
Most Helpful Guy
Yes I have and that's what made it so interesting; I'm trying to figure out why I'm somewhat fond of her...