Why do I always end up in friendships that forget about me?

So the thing is, all of my life I’ve made friendships with either a single person or a group of ppl that will always end up forgetting about me.

Just as an example: the last two days I have one bff I’ve known for 17 years now. Yesterday we met up and she tells me how her and her bf don’t get to spend valentines romantically bc her little brother feels lonely and another good friend of hers decided to join and bring another friend as well. I didn’t know about anything and I didn’t get asked to join even tho I’m just as single as the others. It hurts bc we’ve talked about those topics in the past.

Today another close friend called me to vent, which is totally fine. I told them they could come along to a concert that I’m attending alone. Declined but said they’re going to a bar later with another friend and that I could join. And then take cute pics of them together. When we were on our way home it turned out that they both stayed at the 1st friends house, cook pasta and have a girls night. The thing is, we’re in a group chat. Nobody asked me if I wanted to join before that phone call, they didn’t ask if I wanted to come home with them and they also never asked for pics of the three of us after I took shots of them. I get it, I’m a photographer. But I’m also their friend. We see each other a lot, but they usually ask me last minute or when it comes up while I’m around.

I know I don’t have to be there whenever they hang out. But it does hurt to be left out while you’re spending time together. I don’t need to be included all the fucking time. I just want to feel like they want to see me. There are a lot more examples of a lot more friends. I’m starting to wonder what the problem is. Bc they all tell me they value me and that I’m such a good friend. That they can talk to me about everything without me judging, tell me I’m fun and a wonderful person. Then why don’t they ask me? Why does it always depend on either me asking or talking to them at the right moment to be involved? I basically have no pictures with them, and if, then they don’t like them and I can’t post them. It just makes me feel more and more lonely and it shatters my heart. I don’t understand what the problem is?

I’m not that type of person to only talk about myself and they also don’t really ask me how I’m doing and actually listen, I usually get interrupted. Which I’m not mad about, but I do have to start my topic at least three times.

This is just a teeny tiny bit of what’s going on, but tonight I just don’t know who to talk to anymore and I’m just really sad. All of this makes me feel like I’m too much of a burden.

TLDR

I have friends who know me very well and say they appreciate and love me but usually only ask me out last minute or while we’re talking and something comes up so they’re like yeah you wann join? Makes me sad and I feel lonely.