Scared of all the feelings

So I have a 2 year old daughter and recently split from her dad. It was a long time coming but we lived together for about a year before I moved because she was little and we get along ok... anyway I’m out now and it’s great.

But I met a guy on my last shift at a contract I had and we were just like magnets. He helped me with my things to my car, I drove him home and we hung out in a park and we went out for ice cream that night and ended up making out in the park for 3 hours lol. Ever since we have been all over each other, texting all day, can’t keep our hands off each other when we’re together. I’ve only ever felt this way once in my life and it was an u healthy relationship... so I feel very scared of my feelings toward this guy.

I do see some red flags though... he’s always always out with his friends drinking and going out... and he’s just majorly smooth with women. Like I know he picks up easily and I’m just worried he very easily has these types of relationships whereas I am falling for him so fast.

Like the other day I got annoyed because he came over but he left like as soon as we finished messing around and he could tell I was kind of upset. For a few days after he kept mentioning the look on my face so we talked about t and couple days after he came and stayed over.

He says he likes me, he says all the right things... but what do I believe?? I’m just so nervous he will be gone as fast as he came