Regular poster but name changed for this as quite personal.
Those of you with a best friend of the opposite sex (or an experience related to this), can you share with me how you distinguish the connection between your partner/spouse and your best friend?
For context, my bf has a female best friend. They are very close, talk multiple times a day, see each other a few times a week, share everything about their lives. They have known each other for 6 years. She has a LTR, and he is also friends with her partner. I haven't met her yet (I used to live quite a distance away but only recently moved back, and now we are in lockdown).
It never bothered me initially as I have lots of male friends, have dated men with female friends etc and do believe men and women can be friends. However, I have never encountered a friendship of this intensity. It makes me question what is the difference between our relationship and their friendship because other than the physical, there's nothing we share that they don't. I did once ask him if there's anything he tells me that he doesn't tell her - and he said, no.
He has tried to re-assure me by saying he is attracted to me, not attracted to her, that he and I have more in common, and feels a different kind of excitement about me. And that she has a partner who he likes a lot so would never go there. But to me a relationship is as much about the emotional intimacy as the physical, and I am struggling that there is another woman who gets this much of his time and attention. For e.g. he tries to split his time equally between us both so I don't really see him as much as I'd like. Or she will message him (silly stuff) late at night even when she knows he is with me (and I only see him 1-2 times a week).
He is a great guy and I do love him. Our relationship is fine otherwise, but I am struggling with this, because at what point do the lines blur from friendship to relationship (even without the physical). What are the boundaries needed? Can you please give me advice or tell me your stories on how I can best deal with this. I do not want him to feel guilty about his friendship but at the same time it's making me feel insecure about my role in his life.