Should I be worried that my in laws, husband, and parents will find out I have a bf on the side?

Recently my bf told his mother all about me and she is allowing us to enjoy certain intimacies in his bedroom. He said he can't really keep any secrets from his mother and he told her a lot about me such as I'm married to a husband (I really love my husband!!) who is currently deployed and will be back soon. Also her son is gay even though we are able to share certain types of intimate relations. The first time I met her she was very nice to me. Then when she found out all these other things I could tell that suddenly she got very cold and distant. Originally, he and I would stroll along the trails of the park admiring the flowers, plants, and scenary. He wearing his very tight and decidely girlish shorts (he is effeminate, not at all masculine) and I wearing jeans because my mother in law thought it was inappropriate for me to show too much leg while my husband was gone. We would find secluded spots off the trails and without completely removing our clothes pleasure each other.