How does he feel about me?

My brother has a friend who lives in a different city. I first met him 3 years ago and I was in love with him at first sight. This guy asked me for my insta, and I've encountered him 3 more times. Last year he came to my city and my brother told him he can stay at our house with our parents. That time the guy asked me if I'm in love with anybody and one night we went out with him and my brother and when he saw me with make up and beautiful clothes his pupils dilated and he immediately looked down. My mom also noticed at the table where he was seated opposite to me that he was blushing.

I have not seen him in a year and we do not text but he always likes my posts. Yesterday it was Easter and I decided to find the courage and text him. I sent him one cute nice message asking him if he is fine and wishing him health and happiness. I texted him late at night and he replied to me at 5am. Why did he text me at this time? I know from my brother that he's not active at social media and he studies a lot and has a strange sleeping schedule. I was also surprised cause he replied to me with eight messages in a row asking me how I am doing and telling me he's okay and he has found a new internship and he also heard some news about me. He even joked about my name and asked me about my nickname.

I texted him later this morning but as I said he's not this active so it's been hours he hasn't replied yet.

Do you think he is romantically attracted to me and if yes, do you think based on his behavior he would accept to do ldr. Please note I'm kinda in a difficult situation cause he's my brother's friend altho my brother approves and the guy once was in an affair with his older brother's female friend.

How does he feel about me?
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