what are the signs of knowing if a guy likes you? if so,how much? what can prove it? time? money? his actions?

what are the signs of you falling in love with another? faster heartbeats when you see him? staring at the guy? missing him? being aware of his every little actions?

what are the signs of you letting go the past? forgeting the person? having started a new relationship?

i have no idea.

ps.what else to add in?