I (22M) getting Anxious when my gf (21f) mentions a guy from her workplace. How to overcome this ?

This is a new relationship (2 months) and my gf works at a different shift. So when she's working I'm free and I'm on my phone most of the time. Although she's busy, she texts me inbetween work and does FaceTime almost everyday after her lunch for 30 mins and updates me on almost everything, like what she's eating, how much her work is done and many more.

So there's this guy 27M w whom she has to work with, and it seems like he's onto my gf (from my pov). He does things like commenting on my gf body (not sexually), sitting close, being so friendly during work hours and many more. My gf and him are on friends term and she said she's maintaining a professional relationship with him. I trust my gf completely, she updates me from morning to late night about what she's doing, yet my heart gets stiff when she mentions about that guy, I cannot ask her to not talk about him, because I don't want her to hide anything from me in future regarding opposite gender.