That is when:
❤ - Suddenly realized that you are being loved
❤ - Laugh so much to see ... painful mouth
❤ - Get a "special"
❤ - Ah, I have mail / email
❤ - Overheard my favorite song
❤ - Find the lyrics that you like, so you can sing along without noticing that you are singing wrong
❤ - Heart beating faster when seeing a certain person
❤ - Hear the laugh of your best friend
❤ - Meet an old friend who has not contacted and suddenly find that he or she does not change, still love you as before
❤ - See a person's face when they open the gift you have prepared very elaborately
❤ - Wake up every morning and think that you will have a good day
These are very normal but wonderful feelings. You enjoy to know yourself happy.