broken relationship

by win
(uk)

my partner and i have been together for 25 years and have 3 children, one who has special needs. we have always been very close and loving and always soul mates. we started swinging 2 years ago to add a bit of extra excitement and all was well we both enjoyed it. then my partner started seeing someone we had met during swinging and fell for her.

I knew he was playing with her as we call it but then I looked at his phone and found out that they had deep feelings for each other and used the word love. I was devastated and told him to leave which he wouldn't. he said he wouldn't see her again.

we have stopped swinging now and he went into a depression and said he had lost a best friend. I couldn't take the sadness and moods any longer and said he could still see her as a friend. now he is so happy and i am miserable I don't think I love him any more. we don't seem to have intimacy any more. I don't know what to do.