How can you tell if a boy is joking or serious?

If a man really has a heart for you, then he will love you sincerely, be jealous of you and want to stick to you all the time. Consider the long-term future for you. If a man just wants to seduce you, it's just for fun! Then, he hardly cares about your feelings! I won't put you in his future plans! For girls, I suggest that you can observe the details and judge by women's intuition! This is very accurate!