What should I do if I fall for my unemployed childhood friend living next door?

So... Episode 5

Dongmin: Do you know that?
Dongmin spoke first when putting it on.
Female Lead: What?
He thought for a moment and then said
I used to like you.
... silence passed for a long time and
After getting out of the taxi and walking
But why is it in the past tense? Could it be that they're tired of me?
Maybe it was because I had been drinking, but tears came out right away. It was hard to hold them back.
Cried for about 10 seconds, then stopped crying.
Taesan seemed flustered.
He spoke in that silence.
Female Lead: So...