Do you think I am overthinking? Or he just being friendly?

I live in aboard since i was young, and the last time i went back home country, i was staying in the luxury hotel near the airport because my flight was in the early morning. So I didn’t have something to do , and i was thinking to meet my old co worker and treated him for dinner (he is much older than me like 45-50 because i had part time jobs when i was teenager, so had a lot older co worker). He said yes, but he offered me to pick me to the restaurant. When he arrived, he asked me to go to my room, but i was thinking he just want to see my room because it was nice hotel, he might be just curious to see the room. But i didn’t allow him and just asked let’s just go get some food. But when he dropped me to the hotel, he asked again if he can go to my room for a while, i still say no. It’s not really nice to bring someone to my room even just to see the room, my man wouldn’t like it, that what I said to him. But a few days ago he texted me
“How are you doing?”.
“When will you come back again?”.
“I miss you “.

It’s disgust me tbh.
Do you think i am overthinking or he just being friendly?
Do you think I am overthinking? Or he just being friendly?
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