while returning from Gayatri camp

i was coming back from Gaytri camp. in our small group there were two ladies. we entered a train compartment. seats were almost occupied. they found one seat empty. they went near the seat but they could not decide who should sit. so they requested each other to sit. it went on for some time before the person sitting next to that empty seat could not bear the sense of sacrifice they were attempting for each other. so got up from his seat and offered them both of them to sit happily. expressing thanks they took the seat. if somebody wanted then they could have thought of this incident a trick by these reverential ladies and taking undue advantage of that generous person. in Bharat it may look common for men giving place to ladies but i dont think that happens in Japan. here only sick, extremely old, person with broken limbs, pregnant lady or infant feeding ladies are given priority. and to get that priority too there are fixed priority seats. but neither these ladies fall in any of these categories and nor that was priority seat.
after some time we changed train. here one of the elderly man from our group sat at on of the priority seat. such seat can accommodate three people. our man was sitting in middle. soon three old people entered. one of them being much frail sat at the right side. there was a lady in that group of three and she were interacting a lot. so our man offered the lady to sit on other side which she refused. our man thought that the man sitting next to him and the lady are couple and would not like our man to be between them. so, he moved to side. still that lady did not sit. to me it looked that our man thought again about whole situation. i think, it appeared to him that the other man who is standing along with the lady is her husband. then it indeed appeared natural that the lady would prefer to rather stand along with her husband rather than sitting between two other men. i think our man correct his opinion and got up from his seat to offer lady and her new husband seat to those two people. so these two also sat down. our man was standing and these three were sitting. they were very jovial elderly people. soon at one of the station the "new husband" of them took leave of rest two and got down. so we revised our opinion that they were were not couple rather than the the man who is sitting is the husband. at the next station even this man got down and only the elderly lady remain. after few station even she got down. then we realized that none were related to each other and rather they were just friend. and we thought so much.