I definitely think you can do whatever you like : unless scorned by this thing called "GUILT". Today, you meet the girl , have "consensual sex" or whatever, Tomorrow you meet some other girl. As long as you are OK with a guilt-free conscience that you are not cheating your other one, it is perfectly OK for you to commit the act. Now, one more point: If you are married, its NOT ONLY about you. You should make it feel a guilt-free thing with your beloved too.