You and your boyfriend have fallen into a serious relationship quickly, and the marriage topic has come up. He's had more relationships than you and feels confident that you're the one he wants to marry. You really care about him, but you just aren't sure that he's the person you want to spend the rest of your life with. You want more time to get to know him, but he won't accept that and asks if you'd consider getting engaged in six months. Your answer doesn't change, and he tells you that he's not sure he can be exclusive anymore if you can't promise him an engagement six months down the road.
He says he still loves you, but his inability to stay committed leaves a sour taste in your mouth. It's easy to say dump him, but it's hard because you really love him, and he says he loves you too. So how would you handle this?