Ok so my girfriends acting real shady, shes been in her room all day with a computer and a phone , she says shes working on graphic designs but when i check on her she hasnt gotten anything hardly done, she acts very flinchy and shys away her phone screen from me and gets flustered when i watch her. Ive already caught her lying to me twice about talking with her ex. she says its all in my head but i can feel shes doing something i just dont know what. Am I paranoid or do i have reason to suspect?