AITBF for dating someone my friend used to like?

a few months ago I 19F tried to set my friend 18F up with this guy. She wasn’t really into him but eventually she tried to DM him and he never responded and then she never did anything about it again. One day I randomly ran into him and we went on a walk together, and I started to really like him. We went on a few dates and now he’s my boyfriend. Before I started talking to him though, I asked my friend if it was okay multiple times and she said it was fine.

last night when we were a bit not sober, my friend started saying things like “Isn’t it weird that you were trying to set him up with me and then you started dating him??” and then eventually she said “I actually think it’s really weird and I’m honestly a bit mad about it” She went on to say she never really liked him like that but she thought it was weird that I “pounced on her rejection”. She is pretty sensitive about being rejected, so I understand, but I did ask her multiple times before we started taking if it was okay with her and she said yes.

Honestly I’m a bit annoyed that she brought this up now and not earlier, because he and I just started dating and I really like him but now I feel guilty about it and I don’t want it to cause a rift in my friendship. What should I do?