<human>: Can you summarize the given text in a few sentences?

2 good friends are the culprits. One, we will name Abby and the other is Fran. We are all 21.

Me and Abby have been friends for about 3 years now (college friends). Got really tight, went out together, did a road trip together.

Now me and Fran got really tight about 1.5 years ago. We just clicked and started hanging out every day. Now we live together in a house we share with other girls.

Fran and Abby met through me. Since their first meeting, I had been bending over backwards to get Abby and Fran friendly with each other. Turns out I did too good of a job. Fran turned 21 literally a week ago. But prior to that, Abby and me had gone out to the bars, etc. all the while feeling bad that Fran couldn't join us. Now all of a sudden, Fran and Abby are the duo to be reckoned with. We all hung out earlier today and they were discussing their plans to go out later tonight. I kept silent until Fran asked me "Are you coming?" I hemmed and hawed, because I didn't want to seem too gung-ho about a plan I wasn't even made aware of, and wasn't explicitly invited to. So I said, "I dont know yet but I will let you know"

Hours pass. My boyfriend comes over and we are just hanging out. I go downstairs hours later, assuming Fran didn't go out. Turns out her light is off, etc. so I text her AND Abby: "Did you guys end up going out?" No response from Abby. Fran's response: "Yup! haha. kinda lame though" I respond with "very classy of you ladies."

I am livid right now. I have never been the one to be territorial of my friendships, but I feel highly underappreciated right now. It's as if Fran was just biding her time til she became legal to usurp my friends and Abby has just been mindlessly going along with it, both conveniently forgetting just who introduced them.
<bot>: my friends met through me and are now doing stuff without inviting me despite the fact that I always made it a point to include everyone.