He wants non exclusive, but says he is falling in love with me!?

You can't pressure anyone into any relationship position for which they are not ready. This is just like the guy who pressures a girl into . If he isn't ready to commit to you, then maybe you need to protect your heart as much as you can. He might still want to play before he gets tied down. But I will be honest with you.... if he plays too much and gets too freaky, there is not coming back and even if he gets married, he will always feel like a lion in a cage.