How do I (26F) tell if his (25M) intentions are still “friendly”?

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Back in high school, more than a decade ago, I had a fling with a guy who was a year younger than me. It was the usual puppy love that lasted for quite some time. I can’t say I loved him lol we were too young for that, but there was definitely some emotional attachment. We remained friends throughout the years. I even helped him court one of my friends before.

Eventually, we stopped seeing each other because I transferred schools, then college happened. Still, we kept in touch from time to time (birthday greetings, etc.) and remained as friends.

A few days ago, while I was out for my routine jog/walk, I unexpectedly bumped into him after so many years. I don’t usually pay attention to people’s faces lol, but he noticed me first. We talked, caught up, and shared some laughs. He asked for my number and I gave it to him. He said he’d reach out whenever he decided to jog, so we basically agreed to be jogging buddies. Besides, I don’t really have friends here, they all live in other cities so having some company felt nice.

For context, I’m a very reserved and guarded person. I don’t usually open up about my life, struggles, or experiences, even to friends. He, on the other hand, is very talkative, spontaneous, and random lol. He’s always been like that, and I genuinely appreciate his company naman.

But I got confused when he kept insisting on picking me up at 10PM just so I could “share more.” He even tried calling me, but I told him I didn’t want my parents to assume I have a boyfriend. I’m still healing from my previous relationship, and they know that.

Also for context: he has a girlfriend for two years, and I’m fully aware of that. They seem okay naman based sa stories niya. My intentions are pure, but I’m not sure if we’re on the same page.

What do guys think? I'm confused.