Why do guys wear sunglasses indoors only when they see a girl whom they have had good conversation with before? Avoidance?

Saranap
First off, he has a gf. He did not tell me this but we are girls, we have our ways.

Second, I approached him only bc I thought he was kind of interested as he kept looking at me. I thought we had good conversation and I wouldn't mind a friendship (I know a lot of you probably scoffed at that aha).

For some odd reason, whenever nowadays he sees me, he puts his shade on. Could it be that he is avoiding me? Ironic bc he doesn't run away when he sees me and even smiles like we used to. Albeit, we have known each other for few weeks.

I have two possibilities 1) he thought he passed a wrong message and does not want to talk 2) he got into me but does not want to be disloyal to his gf?

I don't know except I haven't included his other behaviours BUT he confuses the shizz out of me.
Why do guys wear sunglasses indoors only when they see a girl whom they have had good conversation with before? Avoidance?
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