Guys, Is he into me? How should I act?

if a super secretive guy is being open with a girl does it mean he likes me? That guy chose to text me from the battlefield (were from ukraine) and not his parents (they were the ones who told they haven't heard from him for day , that was a year ago) and ever since he keeps being super open and asks tons of questions but nothing other than that.

He likes u
He does not
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He got back to his ex and restricted me on insta. For the first time ever saw me and didn't greet me, rolled his eyes over. He had such a shameful face expression. Maybe its cause his gal was texting him. On the other hand why would he feel shameful if he doesn't care?
Guys, Is he into me? How should I act?
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