<human>: A few months ago, I left my boyfriend of 5 years. This had a long time coming, and having recently moved for college, this ends up being a fairly clean break for me. Fast forward a bit, I'm feeling low self confidence (normal breakup stuff) and decide to get a Tinder. I wasn't really intent on meeting up with anyone, but I ended up seeing one of my matches in a class building, and decided to send him a message. We started talking, and went on a few dates. 
On the third date we kiss, which escalates into making out/heavy petting. After this he starts telling me via text message that he misses me, is thinking of me, etc. I hadn't really intended to move so quickly emotionally or physically, so I tell him that I recently got out of a long term relationship and am not looking for anything incredibly serious, however like seeing him and would like to continue doing so. He accepts this and we go on a few more dates. The pattern of physical intimacy continues and I spend the night at his apartment twice.
He's continuously telling me sweet, personal things: he misses me, wants to know more about me, I'm invigorating, he even tried to slip in an "I love you." While I like him a lot and have really enjoyed the time we spend together, I feel unable to reciprocate such personal and intense feelings so early into knowing him. He's admitted multiple times that this is the first relationship-ish thing he's ever had.
I feel guilty. It's not even that I don't like him or couldn't eventually care about him on that level, it's just too fast for me, especially being recently out of a long term relationship. I feel like he is feeling everything much more intensely because I am his first. I'm not sure how to communicate that without being hurtful.

Can you condense the text into three sentences or less?
<bot>: Met someone on Tinder, he wants a more serious relationship than I am capable of right now. Communicated this once. I need to tell him again, but am not sure how.