Obsess.

ob·sess

  [uhb-ses]

verb (used with object)

1.

to dominate or preoccupy the thoughts, feelings, or desires of (a person); beset, trouble, or haunt persistently or abnormally: Suspicion obsessed him.

verb (used without object)

2.

to think about something unceasingly or persistently; dwell obsessively upon something.

p/s: with everything around me. especially kpop and kdrama. *melts*