As long as you are honest about your intensions up front.
I am recently divorced and dating several men. But they all know I'm not looking for a committed relationship I'm just looking to meet people and see where it goes.
I don't talk to them about the other guys, but I do keep it casual. It all depends on the people your dating and where they are at in life. If they are mature, they understand the difference of causal dating and "cheating".
But be aware... if you see someone is really starting to develop strong feelings for you... be fair to them!
Good luck and have fun. There is nothing wrong with getting to know several people.