inconsistant friendships

[julie3]

Hello,

 

I have had these 2 good girl friends for a while in college. The 3 of us get along well, and always hang out on the weekends. We have many inside jokes etc. However, them two have a class together monday-friday, and I'm not in it. During the week they are constantly together, getting lunch etc, and they never invite me. I figure this is because i don't see them that morning in class. I know if I asked to come, they would be more than happy to include me because they are really nice girls. Once in a while, they do ask me to come for dinner, but not always. On thursdays, i always make plans for us on friday and saturday, but for this weekend I decided not to to see if they would text me first. They haven't. I know one of them is sick and was definitely not going out, but why hasn't the other one texted me? I know she is good friends with her floor, but i went out with her and her floor last weekend and we had a really good time. Also, I am definitely friendly with the girls on her floor. I repeat, when the 3 of us are together on weekends, i really feel a connection with them and i truly believe they like me. So why don't they include me all the time. It's not like they are that close with other girls, like they are close with me. Everyone else is just secondary, but the 3 of us are really close. I am hoping that the other girl isn't doing anything tonight either, so i do not feel bad. I mean it's snowing and freezing here, so there's a good chance she isn't, right? sorry just trying to be hopeful/kind of in denial. Should i say something to them? if so, what?

 

thanks.