Idk what to do

I have a problem with one of my friends. Let’s call her Liv. I’ve been friends with her for five years and I absolutely love her to death. But recently she’s been treating me much differently. Like before she’d send me clips on *** or like we would text each other funny things. But now she’s like curt and almost cold to me. I think she’s mad at me because she called me while I was out with some other friends and asked me if we were going to do ice skating with our friend group since she was going to be in town as she lives a two hour drive away from me. I said I didn’t know and to ask one of our friends who would be our driver as none of us drove even though we are definitely all old enough to. Then my friend, Liv asked if I could ask our driver friend if we were going ice skating and I said no as I was out and it’d be rude to make a phone call with other people as I was at dinner. Then Liv asked if I could call our driver friend when I was done and I kinda snapped at her and said I wouldn’t because Liv is the one who wants to go ice skating and I wouldn’t be doing her things for her. So recently Liv sent me a clip on *** about this motivational speaker who was talking about how people can outgrow each other and they’re only meant for a season in a persons life. And I’ll admit I felt like I got slapped because i thought she was directing it to me. But when I asked she said no. So whatever, cool. But then the next day when I did see her she wasn’t very friendly. She was mad because I did say I might not be able to see her because I had to figure out a transportation route because my parents refuse to drive me(different story for a different day) and I’d probably be an hour late. But she was so offended and thought I was being rude because I said I got a new job and had to figure out how I was going to get there. She said I was the one who was constantly asking to hang out and she didn’t know when she’d come down again. Not like that’s a problem because I go down to see her like once a month. I just feel hurt that she’s doing this because I’ve done so much for her over a course of five years. I’ve never asked to be paid back and I’ve bent over backwards for her but then she treats me like this. I feel she doesn’t appreciate or understand just how much I do for her. I feel she only uses me for my money as I make more than her and only contacts me when she needs or wants things. Never because she just wants to talk. I’ve called her just wanting to talk and not really because I need anything from her. I feel like this is a very one sided friendship. But I would hate to lose her over five years. I feel like I can’t express how I feel because she’ll think I’m attacking her or won’t care or just thinks I’m being a b word.

Sorry for long rant.