Guys: if a guy smiles nervously, is he flirting or is he uncomfortable?

Anonymous
So there is a guy in my tennis class that has been staring at me and checking me out. I tried talking to him but he avoids me. So today a girl arrived to class and she was talking to him and she kept flirting with him, when I turned to see him, he was blushing and had this nervous smile and turned to look my way. I cannot be sure if he was also flirting with her? Nervous? Uncomfortable? And why even look my way when this girl was giving him the attention?

(I asked this question before but got no responses, Iโ€™d appreciate some opinions , advices or insight about this) thanks ๐Ÿ˜Š
Guys: if a guy smiles nervously, is he flirting or is he uncomfortable?
Guys: if a guy smiles nervously, is he flirting or is he uncomfortable?
4 Opinion