Husband wants me to cut ties with friend

I have a female friend who is gay. She is a very bright snd cheerful person who has never ONCE hit on me. I met her at work 4 years ago and even though I am not working there anymore we have stayed friends. She will come over and hang out with both my husband and I and even though he likes her as a friend, he is very jealous of her. I am not into women, I've never given him a reason to be jealous of anybody, yet we fight constantly about this. He would rather I cut ties with her even though my husband and I are supposed to be going to a festival this summer with her and her mom. My friend loves my husband like a friend too. When we hang out with her she wants to hang out with him too! She has repeatedly expressed how much she appreciates BOTH of us not caring that she is gay and feels that he and I are wonderful friends and that she doesnt have to worry about being judged (she has a friend who's husband is a misogynist and tries to talk her out of being gay) . I am a stay at home mom and I really have only one friend and its her. I forget that she is gay because I dont care, it doesnt bother me. I am sick of fighting with him about her. I feel like I am allowed to have friends and should be able to text her without feeling guilty. It would break my heart to have to cut ties with her because I know for her it would be losing 2 friends, not just 1 and it would come out of nowhere. Being a stay at home mom has isolated me a bit, I dont have many people to talk to. She is literally my only friend that i talk to. Without her its just my husband, my dad, my brother, and my mother in law that I talk to. She is a very good person with a positive vibe. I don't know what to do. I love my husband very much and I get where he is coming from. I used to be a very jealous person when we first started dating 10 years ago and he would text female friends. That was a long time ago and I had no self confidence and trust issues. He never used to be a jealous person, i dont understand whats changed. I would understand more if it was a male friend that I had, but like I said, she has never once hit on me, or me hit on her. Sorry for the long post, just wanted to give some background. Thank you for your kindness and insight <3