If you already feel uncomfortable about how he's going too fast then I wouldn't meet him. You need to get to know him a little bit longer before you guys meet in person anyway. I've met men on the internet before for the purpose of dating and I made sure I talked and emailed them on a consistent basis for at least a month. You must be careful. He is a bit older then you and is looking for serious relationship so he probably wants to let you know what is on his mind. If you're not ready to go at such a fast pace then pass this go on. I use to date someone who was 5-6 years older then me and in the first month he was already talking about marriage and kids. It sure freaked me out at first because I have my own person goals that I want to achieve before I pop any babies out. It never worked out because our goals in life and when we want to achieve them were totally way off. Also he was a very controlling guy. So get to know your guy before you jump into something you're not comfortable with. Always listen to your gut and never doubt yourself. There's nothing wrong with you having some doubts.