I have two Star Jasmine which at times are referred to as Confederate....but according to several pictures I have seen of confederate, they are not the same....either way, depending on which one you have you can leave it outside during sun and rain. In the Spring I put mine out on the South deck and that is about April 15th. I never bring them in until Sept. 15th unless as happened this year, the temperature dropped to 60 very suddenly at night and although they can take a sudden drop like that, I did not want it to happen everyday for a week, so I brought them and the camellia inside. The other jasmine stayed out until the middle of Sept. since they are more hardy. I think you need to look up Confederate Jasmine and be sure which one you have before you decide how you want to take care of it. The flowers are the only way you will be able to tell.
Just google it and take a look at the pictures. This is what I would do, and I am only suggesting it to you because I know you really want to make this plant happy.
