Is Lily being insecure?

So I had a small birthday party. At that birthday party the guys who tend to have this sort of humor of saying flirty things to each other as jokes. My friend Ashley was there and was contributing to said jokes well when one of the guys said a stripper joke to Liam and Ashley said “I’d do that”. It was taken as she was flirting with Liam. Liam is engaged and Ashley met his fiancée once but was just saying jokes and wasn’t really directing it towards him but he took it that way or it least sounded that way. Anywho me and my man were invited to Liam’s and fiancée Lily’s party and I asked if Ashley could come. Liam responded through text that Ashley made him uncomfortable and that it would cause problems at the party with his girl. Anywho I was like that’s fine but when I was there Lily said she “hate her and she’s not invited to my place” because of what happened. I just think like that’s reasonable to not want her there but also just kinda insecure of her to be like I hate her. When it was most likely a simple mistake and Ashley forgot he was taken and didn’t remember meeting Lily. As she does have a bad memory. At the very least she could’ve heard Ashley out about it maybe not at that party but I don't know. Thoughts?

Is Lily being insecure?
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