<human>: Summarize the given text in a few sentences.

I (23f)have 3 best friends and they're pretty much the only friends I have right now. I'm not in school and I work with my bf at his family business so I don't really have the means of meeting new people. 

My friends Ally (21f) and Amy(19f) are sisters and live just one block from Linda (18F) so they always find time to see each other. I however live about a mile away but there's plenty of public transportation around my area and their's. Now I'm not naive, I understand that they have their own life and have school and work to attend. I get that..I don't expect to hang out alllll the time. But it seems I'm just never thought of. 

Recently Linda has felt that Ally and Amy have been a little too over bearing and want to spend TOO much time with her. She recently got a new bf and tried her best to prioritize her time but they don't seem to get that. Linda kind of just shuts down and blows them off for months at a time because it's the only way she feels she can get a break from them. Ally tried to express her feelings about this to me and said "I have no one to hang out with and she just blows me off. We're supposed to be best friends!" To this I replied "uhm..you never ask me..." 
This of course got a pile of excuses and pretty much brushed off. I make plenty of attempts to hang out and even offer to drive to pick them up. 

A few days ago Linda and I spent a lovely day together but Ally and Amy got offended that she came to hang out with me and not them. Linda told them that they always decline my request to hang out so why should they care.

Maybe I'm just being petty but these are my best friends and I enjoy spending time with them on those rare occasions that I do. How do I explain to them how I feel without coming off needy? Even if I see them once a week or even once every other week I'll be happy! Just sick of being the forgotten friend.
<bot>: my friends always hang out and never think to invite me. When they get turned down by another friend they complain they have no one to hang out with even tho they never even try to see if I'm available.