I’ve been with my partner now for about 14 months. I find it quite difficult to accept how secluded her social life is. I’ve only met her best friend twice (once properly) and whenever she goes anywhere, it’s always without me.
I understand that sometimes when she goes out with her girl friends that I would naturally not go. But every work event or get together is never open to partners, and I feel as though I’m a separate part of her life. I feel as though I shouldn’t be irritated by it, but I can’t help the way I feel. I’ve not really discussed it with her. I’ve mentioned it in a passing conversation but she brushes it off and just says ‘go out with your friends on the same days.’ But I don’t want to set up extra socialising events just because I’m not invited to anything she does.. Am I being unreasonable?
LemonVibe 
I think it’s time you spoke to her about it and then maybe a therapist. You might have depression. She might need to cut back on some socializing and she might not. She might be the wrong person for you, even though she’s a great person. Start by talking to her.
Straight up, man…. Talk to her about it. Let her know that you’d love the opportunity to hang out with her social circle once in a while. Or, you could offer to have some of your friends hang out with hers to see if each of your groups of friends connects.
If she wants nothing to do with it, and you’re not happy, then leave the situation. There are billions of women out there. You deserve to feel happy in your relationship.