i have to write a fictional essay focused on character motivation

this is my plot:You meet someone who looks very jovial and happy and you fall in love only to realize that there are innumerable problems in his life. You feel cheated and think he has cheated you decide to break off, he doesn’t make any effort to hold you back. Fast forward 7 years…
You are on a morning stroll in the park with your lovely family ( handsome husband and adorable kids ) and suddenly glance upon a familiar figure. Someone pushing a wheelchair with a physically challenged boy. In a moment you realize its your old flame, you get him introduced to your family, he is the same old jolly self, and introduces the invalid person as his brother, you are astounded.
When you ask him softly “Why didn’t you tell me?” He answers, “you wouldn’t understand.”

this is the content that will be in each paragraph:1st paragraph: how you met

2nd paragraph: the conflict and how it arises

3rd paragraph: the family life

4th paragraph: your second meeting after many years (CLIMAX)

5th paragraph: resolution
this is what i have so far:The summer vacation had almost come to a close. And I knew that the leisure time I enjoyed pursuing my hobbies and interests would very soon be replaced with the hectic school activities. In spite of this uneasiness in the mind, I was all the more looking forward to meeting my friends after a long vacation. I could not hide my excitement to meet my old friends and the excitement multiplied many folds thinking about the new faces that would be joining us. I packed my bags keeping each and every thing that I thought I might be needing in the course of time that particular academic year. When I stepped inside the gates of the school most of the faces looked familiar but rejuvenated and fresh. We all could feel a wave of excitement at reunion, thinking of the prospect of having to share one more year of fun and frolic and loads of activities. I was waving at everyone and suddenly my eyes just got fixed upon a face that just stood apart in the crowd. It was a very familiar face to me and had a unique charm in it. I can never forget that jovial look, the captivating eyes and the tall and lean structure of his. Yes, I’m talking about Henry, the memories seem so fresh. He asked me out last year and our relationship had been perfect since then. I was smitten by his looks and cupid struck me in the very first meet.

please check/correct and help me start on my other paragrapsh :)

this is my second paragraph so far:

It all seemed to be going fine until now. We had an idyllic summer, meeting each other and enjoying life. But sometimes I felt he is preoccupied with something else when he was with me. His eyes had that far away look. Often we used to argue about this. I suspected he had another girl friend and that he was only using me to pass time. One day when we were sitting in a movie and I saw he had gone into in far away mood and I asked him point blankly what is the matter. Then he told me about his brother who is sick and his responsibility to love and that though he loved me he could not take the