Friendship problems

Hi, I have a friend and she has never dated anyone and she gets upset when me and a friend that has a bf can’t hang bc we already have plans. I’ve noticed that she’s been acting strange lately, whenever im with my bf she leaves my snaps on seen or whenever i talk about him (i try to not do it so often anymore) she replies with short answers even though she talks a lot and i always listen to her talk about the same guy over and over and im never tired of it bc it makes me happy to see how excited she looks talking about him. I feel really guilty about spending time with my bf but he makes me sooo happy and i always have a great time with him, but i feel like my friend disapproves. I wanna make everyone happy. She’s been so distant and it makes me sad but im tired of always trying.