I am not sure what to make of, or do about, this situation.
I am friends with Jamie whose roommate is Lexie. Jamie plays in a band and her band played a small local venue about 6 months ago, and Lexie came to the show. I chatted with Lexie for maybe 20 minutes because she works in a similar field as mine. After the show, I added her on facebook, as I was trying to get to know people in the area having just moved back maybe a year prior at that point. Months went by - maybe 2-3 months - and I didn't see or talk to Lexie again. She wasn't very active on facebook and it just didn't seem like we were going to end up actively being friends, so when I was clearing out my friends list I defriended her. I keep my FB friends list to only people I either see and talk to regularly in real life, or people who live far away who I want to keep in touch with.
After a few months there was a get together with Jamie and a few other people where Lexie came along, and I gave the two of them a ride. This time, LordL ended up talking to Lexie quite a bit but I didn't talk to her much. I saw Lexie and Jamie again maybe after another 6 weeks and again LordL talked to Lexie more than I did, though I did join the conversation with both of them for maybe 10-15 minutes.
Yesterday I saw Jamie and she told me that she wasn't supposed to say anything but it was bugging her a lot - Lexie is convinced that I "hate" her because I defriended her on facebook, and never added her back even though we've talked a few times since we've met. Lexie apparently wants to be friends with me, but feels rejected because of the facebook thing and because I didn't talk to her much the last time I saw her. She thinks that because LordL talks to her more, that I might think she is trying to hit on him or something, and that's why I don't like her. Jamie thought Lexie was majorly overreacting, and tried to tell her (nicely) that I don't even know her well enough to have an opinion of her (which is true), but Lexie has a bit of a complex about it apparently.
I am pretty flabberghasted. I'm the type of person who tends to get along well with anyone, and is sensitive about offending anyone, and I do sometimes worry that my facebook policy will have that result - I just didn't think that anyone even goes and checks whether I've defriended them.
How should I act towards Lexie when I see her next? Is she overreacting to an extent where this is a sort of "don't engage the crazy" situation or should I try to be extra nice to her, talk to her more, etc. to try to correct her perception? Jamie said she is going to have a party at their apartment soon so I'll have a chance to interact with both of them and potentially smooth things over, but I'm not sure what to do.