If a girl can't hold eye contact with you is it nervousness or something else?

If a girl that used to be able to hold eye contact with you, after a few months of not seeing you, can't hold it anymore while talking to you, does it mean she is nervous around you, is she not pleased to see you again, or what? I know if I ask her about it shell lie and say that everything is OK, but I know that's not true. But its weird. What could it be.
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+1 y
mmh, we were just friends, we used to hang out sporadically, and see each other at work everyday, but they changed my shift and we stopped seeing each other for 3 months. We didn't hanged out that much outside of work.
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+1 y
I missed her a lot, so it seemed weird to me that while she showed happiness at seeing me again, she seemed a little off while talking to me, avoiding my eyes. She used to be able to look at me while talking without any problem.
If a girl can't hold eye contact with you is it nervousness or something else?
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