Most Helpful Guy
I don't quite understand the question... How exactly is he making her jealous? Do you mean he is making his female friend jealous of another woman? If they are friends, then she has no reason to be jealous. The only reason I could see the female friend being jealous is if she is in his "friendzone" and she is trying to escape. Using that assumption, I would have to ask, "Is he purposely making her jealous, or is it inadvertent?" If it is on purpose, then he likely wants his female friend to no longer be just a friend and is actively attempting to escape from her "friendzone". If he is inadvertently making her jealous, then it is just a byproduct of her feelings for him. She needs to either tell him how she feels or just deal with it.
Most Helpful Girl
Youd find they probably aren't trying to. As females we just genuienly take things to heart a lot lol. If he is intentionally.. just do it back lol.