New relationship. Commitment issues?

[girl18]

Hey everyone! So I am a 27 year old female and I have been dating a 35 year old man the past almost 2 months. Everything is going FABULOUS! Seriously he is perfect for me and there is not one red flag about him. We have an amazing time together and he is a great guy. The worst thing about the relationship is that we live an hour away from eachother which we work out pretty well by seeing eachother on the weekends. We both put in great effort to make it work and the distance is not really an issue at this point. It gives us time to have a couple days inbetween to ourselves which I value since I am very independent and like my "me" time. Also i might add that we met on a website for people with STDS because we both have one so the whole anticipation and fear of having that "talk" is something I don't have to worry about. Like I said, everything is perfect. Well, this past weekend, we made the relationship official. We have been having sex the past couple weeks and were talking about birth control and basically I told him I need more of a commitment to go on it and want to make sure that he isn't dating anyone else and blah blah blah. So he said he wasn't and already removed himself from the site and just kinda laughed because I guess in his generation the guy doesnt really ask the girl to be boyfriend and girlfriend, it's just kinda assumed that that's what it is. I thought it was cute so he asked me lol. So now we are offically together. I was so happy but then after a couple hours we were laying on the couch together cuddling and I just felt like I was getting anxiety. I have no idea why this is happening and it freaked me out. The thing I like about him and is that everything just works and there is no stress or arguing which is something I am not used to. I have been single 3 years and my last relationship all we did was fight all the time. I don't want to ruin this relationship but here I am 2 days later and I am back at my house and still having this anxiety. I am supposed to go back down to see him or he's coming here on Thursday or Friday and we plan on spending the weekend together. Someone please tell me that this will pass. I don't want to lose this guy he is so good to me and everyone tells me that I seem so much happier which is true and I've never had that before. I don't know if maybe I have commitment issues or maybe I'm just scared of getting hurt but I really don't think he is the type that will do that to me. One thing though is the day we became "official" we had sex like 4 times that day. It was amazing and we have great chemistry but the last guy I dated it was purely based on sex. Maybe I'm worried that this will turn into the same? Ugh I don't know why I am freaking out like this! We already started planning going away together in a couple of months. He wants to take me to stay in a cabin in TN because I've never seen snow before and he wants to share that with me. Maybe I am overanalyzing? Like I said we have great chemistry, have the same outlooks on life, get along so well, have SOO much fun together I think because he always wants to go out and do things and be active and do fun cute dates. Any advice will be much appreciated. Thank you so much!