<human>: Yeah, so my girlfriend works with different kind of people, which most of are men. She don't really use her phone for eight hours every day, and now when she gets off work, immediately her WA profile picture has been changed, and when I ask, all she says that she tried to look for an another similar profile picture, but she went with the current one, that she wanted to change. 

Every time she talks about her work, I get the picture how she works with lots of other men, which I could really not care less, but now just out of nowhere, I got the feeling something is off. She usually just gets of work at 9 pm, goes to her place, says good night and that's it. Now, she gets off work 15 minutes earlier and she just changes her WA profile picture. Am I really insecure and paranoid peace of..you know, or could I've realized something really serious regarding our relationship here?

Can you condense the text into three sentences or less?
<bot>: GF changes her WA profile picture in the middle of the evening after a long day of work. Is there a reason to be paranoid?