Public displays of affection between those of the opposite sex are likely to be frowned upon, especially in rural areas.  Even married people do not hold hands in public.  You will however, see same sex couples holding hands or walking with arms around each other. It is a common friendship gesture.

Perception of friendship is realized before such terms like Gay or Lesbian. When someone talks to you and taps you while talking to you consider that the person is trying to get your attention - it’s a Nepali way of friendship.