Do INTPs gather info or ask questions?

I've read that INTPs when interested in someone will ask a lot of questions to get to know them.

Is this always true?

What if you like this person so much that it is debilitating and you are super nervous/awkward around them, would you still try to ask questions or would you gather information from other people or listening to her conversations (i.e in a public office where you can listen in)?

I know an INTP male who I think likes me but I am unsure. In the early stages we knew each other, he was super nervous, and now we are comfortable. We talk about philosophy, technology, society etc. So the intellectual chemistry is definitely there, but he also shares personal stories and worries unprompted. He also tends to explain his 'condition' by acknowledging he finds social situations difficult, and that people tend to not know how to talk to him.

He doesn't necessarily ask me questions, but if it's relevant, I share something about me with him and he always seems to smile or share something back after. Recently, I shared that I tend to give advice because I have this urge to help, but it's not always welcomed or people are not ready to hear it and are on their own journey so I keep my advice to myself most of the time. He smiled so tenderly and warmly at this, it caught me offguard.

I just don't know if there are any romantic signs here from him. I do feel very intellectually and emotionally connected to him.