So, I met a lovely friend A a few years back and she and her husband became very good friends with us, i.e. shared meals, trips out holidays etc. At some point I introduced her to another 'friend' B. For a while we all got on well as 'girls' and couples and went out together quite a bit. However at some point A and B started doing things without inviting me. These were largely instigated by B. We all remained friends but I increasingly felt like the odd one out when we were together - i.e A and B chatting about things they'd done together. We had always exchanged birthday and Christmas presents and cards but around two years ago, A didn't give me a birthday present or card although I gave her one when her birthday came round. At the time I thought it was just due to the lockdown and although I was a little hurt, gave her the benefit of the doubt. Even so, when B's birthday came round and we all went out for a drink to celebrate, A gave B a really nice very belated present in front of me which I found quite hurtful. My birthday came round once more and again no card or present from A just a text message, although I gave her a nice present and card. I am now feeling really pissed off with A and wonder what I have done to deserve this treatment. I feel now I don't really want anything more to do with either of them and plan to give them both a wide berth in future. I just don't want to be treated like shit by them anymore. AIBU?