what type of love is this???

Tweet

a boy decent once observed a girl staring at him when in balcony of his home.....then from next day whenever he comes out ,she also comes out.....he thought it was love but he dont know why she comes out ...they had never talked before in their life.....but he felt that she loved him ...after few days he observed the same girl with other boy....so he was broken....... similar incident happened when he was in college....but that girl married one of his coll friend...so he decided not to be in matter of love.....can you please tell me what was his fault??? what do think about him?????please suggest solution for him....