I'm going to dabble into some women's psychology that most men either don't know or dont get. Now, most guys don’t worry too much about their reputation but for women, reputation is very important. Most women won’t do something if it might make them look easy in front of their friends. Their modesty as a lady must also be in tact.
The good news is, when they’re alone, most women are up for much the same kind of stuff that men are up for. Sometimes though, you need to wait until the friends aren’t around to see both sides of a woman. Relationships that we see television, it always works like this, shows women are dying for relationships and guys are afraid to commit. Well guess what? It’s the opposite. In the vast majority of situations, it is guys who scare women away by being too clingy. For 90% of women (under 30), the only kind of commitment they want from you is a commitment to hang out with them again, call them in the morning and not be a complete dick.
It goes without saying, guys often feel this need to talk things out and explain things logically that often is awkward and lame to women. For example, guys feel compelled to say things like "I like you", when the smooth thing to do would be to just kiss her. If you did, chances are she already knows it. If she’s still hanging out with you, she probably likes you too. Dummy!
Another good example of this is the "relationship talk". You know the talk, sometimes it happens before sex, sometimes it happens after, but you’re sitting in bed with a girl and you feel compelled to put your cards on the table. You tell her you really like her but you want her to know that you're not really interested in an exclusive relationship at present. Even worse, “I want to sleep with other women”. This is not the way. Seeing and being with other people is alright but give a little respect to the one that's also with you. She may also be doing the same with other guys but she'll keep that to herself. In part to do with her modesty as well.
Most women don’t really care that much about what you do when they’re not around, unless you’ve explicitly boxed yourself into the boyfriend role. Don't hint that you're being monogamous with any women you're seeing and they'll never ask if you're sleeping with other women. Don’t ask, don’t tell is the best policy. It’s not dishonesty . Always answer any question truthfully, and never deliberately mislead a woman. It’s simply the fact that emotionally, women don’t really care what you do when they’re not around, as long as you’re good to them when you’re together. If you're the boyfriend it's a different game. Being single and unattached is what's going on in her mind as well but you just haven't got it yet.
Bar advice. A huge thing to remember about women, and here's a little relationship advice, they hate being played in games and especially liars. You'll be forever black listed and even all her friends will know. Don't do it.