Relationship Advice

So I’ve been hanging out with my ex boyfriend from high school pretty steady for about a month now. He stays the night with me three or four times a week. We are pretty intimate with each other but we haven’t DTR, but I want to.

So backstory:

We dated in high school. He was a senior and I was a sophomore so it wasn’t going to work after he graduated and went to college so we broke up. He took my virginity and I think he was my first love.

We went to different colleges but still occasionally communicated with each other. He graduated and moved to a different state for a job and I moved back close to our hometown for my job when I graduated college. He is now back in our home town and we live about 30-35 mins from each other. So when we both realized we were back home we talked and got drinks a couple of times and kinda stopped talking, that was about four months ago.

Labor Day weekend we hung out and had a great time and started hanging out several times a week after that.

Now he stays the night with me and we spend a lot of time together. Pretty much all the free time we have we are together.

In my opinion it is a relationship and a serious one at that. And we’ve kind of talked about it and when I ask him what he wants from this his response is “I really like spending time with you and don’t want that to stop.”

But me being the over thinker and over analyzer I am I need specifics.

I want to be his girlfriend and I want to be in a relationship with him but I don’t want to come off too strong and screw this up. He told me he’s not seeing anyone else nor is he interested in pursuing anyone else. I just feel like I’m getting mixed emotions and I just need advice on house to approach this situation in the best, calmest, and healthiest way possible.