Confusing relationship

hi i have a friend 10 years younger than me.he is handsome loving and caring.i invited him to come to my place. my wife equal to my age showed good hospitality to my friend which he liked most .in 2-3 mnths he visited my place and built good relationship with my wife and son 13 yrs. old.i did not object to that.once my friend met an accident and was admitted in hospital. as my wife heard that she insisted to visit him.so we all visited him as he could not take meal with his hand my wife herself made him eat which she prepared at home after that she put powder talcum on his back. i didnot object to that .after curing he came to our place and stayed one night with us, most of the time played with my son.we allowed him to sleep in a double bed with my son. i and my wife slept in a different room in a single bed.as time goes gradually he was transferred to a different place. after 3-4 months he rang to my wife and said that again he was transferred to our town but not to disclose to me as he wanted to give me surprise.but my told me but i pretented as if i did not know anything about his transfer.one day he came to our place . but one thing he never informed me when he was coming. when he reaches near our house , he rang me that he was coming.that day during noon time i was busy with my laptop doing official work he said he would like to sleepafter lunch. after few minutes my wife asked me whether she could sleep beside my son as she was feeling tired. isaid yes.the bed was in next room and doors were opened.but after 15 min.suddenly my wife came out hurriedly but didnot want to show me her rushness. in the evening time i asked my wife thatit would be better if she could sleep with beta and him as the bed was too big to adjust them .and i could sleep alone in asingle bed comfortab;ly in the next room. but my wife told me that he would feel bad and would left the house.so there was no question of asking permission to sleep with my son and him. at sleeping time my wife told me that she had asked him, he said he had no objection if i allowed him.twice or thrice i went to bathroom which i had to go through that room i stared the sleeping position it seemeed to be ok as my wife was sleeping beside my son . next day in order to test her i bluffed that he hugged her which made me feel bad.but at any cost she did not want to believe that. and thatbwas true. what relationship is maintained by my wife and friend pls. help me

if you are not comfortable with this friends closeness with your wife,you need to speak up,there are some rules in a marr,they can be more than friends

you are right. still what do u think about them whenever i say anything about him she got annoyed and start cursing me. all the time she likes to talk about him.does she have any relationship (physical) with him .in one occassion i had to leave them at home as i was away to my office.my friend also like to stay without any apparent reason. please advice me