My Friend told me he.....?

Okay so my friend told me one of my old friends liked me and i dont know what to do. Everytime we p in the hallway we dont even make eye contact. We were in all the same cles last year but it just seems so different. My friend has cles with him and he was being all jerky and then when she mentioned me and her were still friends she said he started acting all nice...does this mean anything? Should I say something? FEEL ACCWARD!!!!