Going too fast

I met a guy fairly recently. We talked for about a month and a half online (off and on, nothing serious) before deciding to meet up. We have gone on three dates so far, and things have gotten very serious between us, though we aren't a couple. My problem...

is that I'm not sure if he's just fooling around with me, or if he's interested in pursuing a relationship. In the past he has dated women, but he has also told me about girls who he's just fooled around with, nothing more. I need advice on how to say that I want us to slow down (back up even :S), and how/if I should bring up the subject of what we are (seeing eachother, fooling around, going to start a relationship, etc). I'm very confused by him, because he seems to want to start a relationship, though he says he doesn't want to rush into anything, but at the same time it seems like he just wants to fool around. HELP :S

How about having a serious conversation with him about your feelings? You have to tell him that you want an exclusive relationship if you want one, or else he might get the wrong idea and still date other women. If he can't man up and have this conversation with you, then he's probably not worth it anyway.

I think he wants sex, but in order to justify that, he's talking to you about possible
relationships.

It's that old thing... men give love for sex, and women give sex for love. I first heard that 35 years ago. Was hoping times would change,,, sigh.

Any guy who moves as fast as hes going, isnt looking for a long term commitment.
Here is something that might help you in your situation:
Stages in a healthy relationship look like this
Attraction toward one another
Friendship
Dating
Taking things slowly
Getting to really know one another's likes and dislikes, values and value systems
Getting to know each other’s friends and family
Getting to know each other’s interests.
Do you have enough in common by now to see if the relationship grows further?
If so, continue to take things slowly:
No sex! Remember, having sex with dating partners is not practicing for marriage, it is practicing for divorce.
Enjoy minimal physical touches: hand-holding, light kissing, arms around each other, hugs, looking into each others eyes. Enjoy the chemistry without the sex.
Have you had any fights yet? Even when disagreeing, each should remain respectful of the other person.
Have you discovered each other’s faults? Can you live with them? In other words, are you able to accept the other person, faults and all without trying to change one another?
Have you found out whether or not each of you has the same values upon which to grow your relationship? Do you have similar goals in life, similar objectives?
Do you find yourself growing together more, or are you finding too many differences in your lives to really make a relationship strong and secure? Break ups do not have to be devastating if/when you discover together that you do not have enough in common to make a commitment work.
Do you have a spiritual bond with each other—do you have a similar faith background to see you through the rough times as well as the good times?
All of the above will give you a good foundation for a lasting relationship.
Remember, it takes time to discover all these things about each other. If you enter into a sexual bond before a marriage commitment, you will not have the closeness in other areas that will be very important for a solid foundation. Statistics have proven this, time and time again.

its really hard to tell if a guy is genuin about a realationship. we are good actors and can hold it for as long as needed. But you've only been on three dates, of course your going to be confused about him. he's probably confused about you. And tell him what you just told us. If he likes you and is interested in having a relationship he will understand. If not, he's not going to stick around, its a good way to spot douchbags. And almost every guy has fooled around with girl, nothing more. Don't hold that against him