First thing's first... I don't know what I want from posting here. Validation? Advice? I'm not sure. I think the latter, but mostly I want to get it off my chest. The situation is probably simpler than I'm making it. I have an old friend, whom I've known since I was 7 or 8. Childhood, pretty much. She and I do have a history (we dated when we were 15 and 16, and then again at 16 and 17), and I did have feelings for her until about two years ago. The feelings have dissipated, and now I love her merely as a friend. She is still a constant in my life, and I value her friendship and don't want to lose it. Then there's my boyfriend, whom I've also known a fairly long time. I grew up with his step sisters and step brother, but he himself wasn't a constant in my life until he was about 8 and I was 14 (yes, I know that's a big age difference - but we are both of age now). I feel as though our relationship was kind of bound to happen, and I'm glad that it did. I have developed feelings for him, and I want to make this last. The thing is, when the friend is around guys - any guys - she has a tendency to flirt. I'm not aware if she is aware that she is doing it, but the flirtation definitely impacts how we behave around her. I am guilty of it myself, and she flirts with me, too. However, I did not become aware of it until I saw her flirting with my boyfriend. Now, though, jealousy is growing. I am aware that it is jealousy, but I am not sure how to respond to it. Being that I have been uninterested in a relationship for most of my adult life (I suspected I might be asexual, and even now suspect I might be gray-asexual), I have little experience in relationships. She is having her son's birthday party this Sunday, and I do want to go. I'm worried, though, that I'll get jealous again. I just don't know how to address it without offending her, but I worry that if I behave in a jealous manner too much around the two of them that it will start to affect my relationship with each respectively.